{"containers": {"cna": {"affected": [{"product": "BIG-IP", "vendor": "n/a", "versions": [{"status": "affected", "version": "16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3"}]}], "descriptions": [{"lang": "en", "value": "On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated."}], "problemTypes": [{"descriptions": [{"description": "RCE", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-03-31T17:23:14.000Z", "orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "shortName": "f5"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://support.f5.com/csp/article/K56715231"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "f5sirt@f5.com", "ID": "CVE-2021-22991", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "BIG-IP", "version": {"version_data": [{"version_value": "16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "RCE"}]}]}, "references": {"reference_data": [{"name": "https://support.f5.com/csp/article/K56715231", "refsource": "MISC", "url": "https://support.f5.com/csp/article/K56715231"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:58:26.089Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://support.f5.com/csp/article/K56715231"}]}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2021-22991", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-01-29T20:33:09.572716Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2022-01-18", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22991"}}}], "references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22991", "tags": ["government-resource"]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-119", "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"}]}], "timeline": [{"time": "2022-01-18T00:00:00+00:00", "lang": "en", "value": "CVE-2021-22991 added to CISA KEV"}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-21T23:25:50.646Z"}}]}, "cveMetadata": {"assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "assignerShortName": "f5", "cveId": "CVE-2021-22991", "datePublished": "2021-03-31T17:23:14.000Z", "dateReserved": "2021-01-06T00:00:00.000Z", "dateUpdated": "2025-10-21T23:25:50.646Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://support.f5.com/csp/article/K56715231", "tags": ["x_refsource_MISC", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:58:26.089Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2021-22991", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-01-29T20:33:09.572716Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2022-01-18", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22991"}}}], "timeline": [{"lang": "en", "time": "2022-01-18T00:00:00+00:00", "value": "CVE-2021-22991 added to CISA KEV"}], "references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22991", "tags": ["government-resource"]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-119", "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-01-29T20:32:18.071Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "BIG-IP", "versions": [{"status": "affected", "version": "16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3"}]}], "references": [{"url": "https://support.f5.com/csp/article/K56715231", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "RCE"}]}], "providerMetadata": {"orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "shortName": "f5", "dateUpdated": "2021-03-31T17:23:14.000Z"}, "x_legacyV4Record": {"affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"version": {"version_data": [{"version_value": "16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3"}]}, "product_name": "BIG-IP"}]}, "vendor_name": "n/a"}]}}, "data_type": "CVE", "references": {"reference_data": [{"url": "https://support.f5.com/csp/article/K56715231", "name": "https://support.f5.com/csp/article/K56715231", "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "eng", "value": "On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "RCE"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-22991", "STATE": "PUBLIC", "ASSIGNER": "f5sirt@f5.com"}}}}, "cveMetadata": {"cveId": "CVE-2021-22991", "state": "PUBLISHED", "dateUpdated": "2025-10-21T23:25:50.646Z", "dateReserved": "2021-01-06T00:00:00.000Z", "assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "datePublished": "2021-03-31T17:23:14.000Z", "assignerShortName": "f5"}, "dataVersion": "5.1"}

{"cisaActionDue": "2022-02-01", "cisaExploitAdd": "2022-01-18", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "F5 BIG-IP Traffic Management Microkernel Buffer Overflow", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "14DE89CF-F8EE-4E09-9755-81F9A2F44F85", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "8C3A0A32-E425-4939-A30D-95A046ABBABB", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "FB553A20-D521-4A32-AD49-8FFD5A95E684", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "6ED8C663-038B-4071-9FF9-AE609F2DA4CD", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "A7706F70-BF89-480E-9AA6-3FE447375138", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "F76ED86B-7C48-4921-AF97-68307C181E7D", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "FE73E240-2CB5-40CB-8E58-08989F5D0156", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "DD3FC6D2-5816-47C0-81AE-DED62570F090", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "F0AC967D-8D6D-44F5-88EF-A50F18979774", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "0A84A8D4-9047-46D2-9C26-03C977D47AE4", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*", "matchCriteriaId": "12A27D41-6DEC-4887-A9A0-FE5AAD01FA98", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*", "matchCriteriaId": "39DDA652-065C-4AF9-A014-E0DAFF60B61B", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*", "matchCriteriaId": "DB183373-A897-43DF-A544-364E59358F30", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*", "matchCriteriaId": "61BA4596-EFD4-483F-952D-4298B6CEFA9D", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*", "matchCriteriaId": "6B9117DA-6AA9-4704-A092-B1D426E6370D", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*", "matchCriteriaId": "6B8AB156-1960-4220-8FD2-BF7FBCD91F85", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*", "matchCriteriaId": "C33FF2CF-2B91-489D-BD48-0CF9B7F0B8A1", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*", "matchCriteriaId": "F2442894-A473-49A5-95B6-6312C3407FE6", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*", "matchCriteriaId": "B462A70A-2504-4E8C-85C3-D771CDB34038", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*", "matchCriteriaId": "4AE6833C-FF7C-4249-BF98-453645EEF8D9", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "8ADB41C0-B8DD-4E31-AE7B-959B4DE938B1", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "E153E94C-35B3-46DF-96B4-0C41EC542954", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "78F5DCAD-BE4E-4D57-82CD-ADAB32691A9E", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "5591E2A0-9D8E-42D2-99E0-62738897762D", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "51E3E0A3-8A75-43F8-8E8A-0C07345B88FD", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "A921F4E5-6BA7-4978-B47E-D1B173FF493F", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "2BF4F8C6-1C43-4A54-9FD6-011253744FC8", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "8B318D4F-0D42-46CD-A5A9-02337BB1D2F2", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "50F6CC82-CAC7-426C-94F0-9E8E26CF61E0", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "7BB77EFF-A064-4475-A93C-5D5BA9313724", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*", "matchCriteriaId": "88ACF2C5-FD3D-49BE-8F32-13559A0C4A63", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*", "matchCriteriaId": "090FC11A-C085-4603-84E0-3ABD6C571E2B", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*", "matchCriteriaId": "AE2899E6-ABEF-4B61-AB8D-AF060D571196", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*", "matchCriteriaId": "29A3450E-EA73-4E17-B371-92F55EF6E1A9", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*", "matchCriteriaId": "40239D12-142E-4D36-A89E-0F7AB91B665A", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*", "matchCriteriaId": "7689C97E-D5FB-427F-9FBA-A41CA0EC7F06", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*", "matchCriteriaId": "29A0B309-E321-4F87-9C36-CAE4C213C14B", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*", "matchCriteriaId": "F7C6025C-7283-4568-929B-CFA11423E179", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*", "matchCriteriaId": "D4D4B28E-43B5-4132-A4EC-B20B9F85964A", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*", "matchCriteriaId": "87CA1319-92D4-4C2F-B5D4-A2E86F538007", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*", "matchCriteriaId": "9DC500F0-4D91-415E-B754-A89F730002F9", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*", "matchCriteriaId": "DA2D429F-42C4-4872-977A-CDABD60F92E6", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*", "matchCriteriaId": "BBBAD42C-06D5-437F-AB92-1DCC23C1A78B", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*", "matchCriteriaId": "626E1218-868C-4328-99DA-62785C6771DF", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*", "matchCriteriaId": "7FE9EF68-055B-40B2-A676-C4C7FAAF77B3", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "B58942BF-915D-49F6-9E8A-2092D1AE572D", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "59BE59F9-E6F3-4D48-89AC-6C4B5635A4E9", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "3DB5F9D2-C452-4469-9626-15FA11960A9C", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "044F30A3-6B2E-4C38-8705-D291CD3CB287", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD28DA4B-F671-41B8-B231-24D28682FE8F", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*", "matchCriteriaId": "4FD31B8D-10AE-4E52-8235-6EB4A12D3965", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*", "matchCriteriaId": "0A9AA005-D0E3-43FC-9D21-9DB8B5B9495D", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*", "matchCriteriaId": "57388787-F9DF-4930-ACBC-F3D1DAA53190", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*", "matchCriteriaId": "1D513ACA-0D21-4CE0-88C1-DCA812F62C05", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*", "matchCriteriaId": "47980A60-F9B6-47EE-AD74-4D6D03A71AD0", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "58A15DC4-30F5-407C-BCE4-BC877C73480A", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "94906B0A-46D2-41FC-BCFD-C66910274CD5", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "0AF0D639-0210-47D0-8680-6E09F0111D5D", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "86607F4A-555F-4842-AFA8-34EB7484FA2E", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "B0901863-B55A-4C97-B9AC-B537D242D2BF", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "D14A8876-B566-4A0C-886D-DAEC77BB3689", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "45D3B1BC-568E-4BD8-8774-75203751C754", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "704DF342-2CB5-4791-BF30-294D07B53653", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "43CB3FEA-4127-460B-846E-81B6C985DEAA", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "85065C6E-71F2-42B8-A169-51174987B8AF", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*", "matchCriteriaId": "34683A56-1665-47C7-A150-246B8A86C363", "versionEndExcluding": "12.1.5.3", "versionStartIncluding": "12.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*", "matchCriteriaId": "6C5DE2DA-0DAF-4DDF-9ACB-DAF301B97FB9", "versionEndExcluding": "13.1.3.6", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*", "matchCriteriaId": "C3FE49A0-46B4-49A1-92A4-1BEA5BF48CDF", "versionEndExcluding": "14.1.4", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*", "matchCriteriaId": "628A35C2-D3D8-40A2-BA55-0910A38036E4", "versionEndExcluding": "15.1.2.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:ssl_orchestrator:*:*:*:*:*:*:*:*", "matchCriteriaId": "14EDD6BB-094C-409F-B702-EC87867EBA17", "versionEndExcluding": "16.0.1.1", "versionStartIncluding": "16.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated."}, {"lang": "es", "value": "En BIG-IP versiones 16.0.x anteriores a 16.0.1.1, versiones 15.1.x anteriores a 15.1.2.1, versiones 14.1.x anteriores a 14.1.4, versiones 13.1.x anteriores a 13.1.3.6 y versiones 12.1.x anteriores a 12.1.5.3, unas peticiones no reveladas a un servidor virtual pueden ser manejadas incorrectamente por la normalizaci\u00f3n del URI de Traffic Management Microkernel (TMM), lo que puede desencadenar un desbordamiento del b\u00fafer, resultando en un ataque de DoS. En determinadas situaciones, te\u00f3ricamente puede permitir la omisi\u00f3n del control de acceso basado en URL o una ejecuci\u00f3n de c\u00f3digo remota (RCE). Nota: No se eval\u00faan las versiones de software que han alcanzado End of Software Development (EoSD)."}], "id": "CVE-2021-22991", "lastModified": "2025-10-27T17:06:52.600", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2021-03-31T18:15:14.787", "references": [{"source": "f5sirt@f5.com", "tags": ["Vendor Advisory"], "url": "https://support.f5.com/csp/article/K56715231"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://support.f5.com/csp/article/K56715231"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22991"}], "sourceIdentifier": "f5sirt@f5.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-119"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{}