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.
History

Mon, 26 Jan 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Free5gc
Free5gc nrf
Vendors & Products Free5gc
Free5gc nrf

Fri, 23 Jan 2026 20:15:00 +0000

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'}


Fri, 23 Jan 2026 15:45:00 +0000

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

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-01-23T00:00:00.000Z

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 : Awaiting Analysis

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

Modified: 2026-01-26T15:03:51.687

Link: CVE-2025-66719

cve-icon Redhat

No data.