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.
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Workaround

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History

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.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-01-23T15:37:08.307Z

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

Link: CVE-2025-66719

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2025-66719

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

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