A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00062.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Redhat Subscribe
Enterprise Linux Subscribe
Rhel Aus Subscribe
Rhel E4s Subscribe
Rhel Els Subscribe
Rhel Eus Subscribe
Rhel Eus Long Life Subscribe
Rhel Tus Subscribe

No data.

No data.

No data.

Advisories
Source ID Title
EUVD EUVD EUVD-2025-31225 A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.
Fixes

Solution

No solution given by the vendor.

Workaround

Mitigation for this issue is either not available or the currently available options don’t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to a widespread installation base, or stability. It is strongly recommended to apply vendor-supplied patches once available.

References
Link Providers
https://access.redhat.com/errata/RHSA-2025:18183 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19713 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19714 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:20959 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21032 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21655 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21656 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21657 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21664 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21665 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21666 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21772 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22013 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2025-11021 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2399627 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-11021 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-11021 cve-icon
History

Tue, 25 Nov 2025 14:30:00 +0900

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_aus:8.2::appstream
cpe:/o:redhat:rhel_aus:8.2::baseos
References

Thu, 20 Nov 2025 02:45:00 +0900

Type Values Removed Values Added
First Time appeared Redhat rhel Eus Long Life
CPEs cpe:/a:redhat:rhel_aus:8.4::appstream
cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
cpe:/o:redhat:rhel_aus:8.4::baseos
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
Vendors & Products Redhat rhel Eus Long Life
References

Wed, 19 Nov 2025 00:00:00 +0900

Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_e4s:8.8::appstream
cpe:/a:redhat:rhel_eus:9.4::appstream
cpe:/o:redhat:rhel_e4s:8.8::baseos
Vendors & Products Redhat rhel Eus
References

Tue, 18 Nov 2025 18:15:00 +0900

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel Tus
CPEs cpe:/a:redhat:rhel_aus:8.6::appstream
cpe:/a:redhat:rhel_e4s:8.6::appstream
cpe:/a:redhat:rhel_tus:8.6::appstream
cpe:/o:redhat:rhel_aus:8.6::baseos
cpe:/o:redhat:rhel_e4s:8.6::baseos
cpe:/o:redhat:rhel_tus:8.6::baseos
Vendors & Products Redhat rhel Aus
Redhat rhel Tus
References

Tue, 18 Nov 2025 18:00:00 +0900

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:7 cpe:/a:redhat:rhel_e4s:9.0::appstream
cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel E4s
Redhat rhel Els
References

Wed, 12 Nov 2025 05:45:00 +0900

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10.1
References

Wed, 05 Nov 2025 04:45:00 +0900

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9 cpe:/a:redhat:enterprise_linux:9::appstream
References

Wed, 05 Nov 2025 01:00:00 +0900

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:8::appstream
cpe:/o:redhat:enterprise_linux:8::baseos
References

Thu, 16 Oct 2025 05:45:00 +0900

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.0
References

Wed, 08 Oct 2025 23:00:00 +0900

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos

Wed, 01 Oct 2025 23:00:00 +0900

Type Values Removed Values Added
First Time appeared Redhat rhivos
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos

Sat, 27 Sep 2025 01:15:00 +0900

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 26 Sep 2025 21:15:00 +0900

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Important

Fri, 26 Sep 2025 17:45:00 +0900

Type Values Removed Values Added
Description A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.
Title Libsoup: out-of-bounds read in cookie date handling of libsoup http library
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-125
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-11-25T05:13:22.532Z

Reserved: 2025-09-26T07:16:40.923Z

Link: CVE-2025-11021

cve-icon Vulnrichment

Updated: 2025-09-26T15:36:35.222Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-26T09:15:31.370

Modified: 2025-11-25T06:15:44.720

Link: CVE-2025-11021

cve-icon Redhat

Severity : Important

Publid Date: 2025-09-26T00:00:00Z

Links: CVE-2025-11021 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses