An issue was discovered in Free5gc NRF 1.4.0. In the access-token generation logic of free5GC, the AccessTokenScopeCheck() function in file internal/sbi/processor/access_token.go bypasses all scope validation when the attacker uses a crafted targetNF value. This allows attackers to obtain an access token with any arbitrary scope.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 24 Jan 2026 05:15:00 +0900

Type Values Removed Values Added
Weaknesses CWE-863
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 24 Jan 2026 00:45:00 +0900

Type Values Removed Values Added
Description An issue was discovered in Free5gc NRF 1.4.0. In the access-token generation logic of free5GC, the AccessTokenScopeCheck() function in file internal/sbi/processor/access_token.go bypasses all scope validation when the attacker uses a crafted targetNF value. This allows attackers to obtain an access token with any arbitrary scope.
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-01-23T19:24:55.108Z

Reserved: 2025-12-08T00:00:00.000Z

Link: CVE-2025-66719

cve-icon Vulnrichment

Updated: 2026-01-23T19:23:58.718Z

cve-icon NVD

Status : Received

Published: 2026-01-23T16:15:51.220

Modified: 2026-01-23T20:15:53.653

Link: CVE-2025-66719

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses