CVE-2025-66719

PoC —

CVSS 3.1

9.1 critical

EPSS

<1%p25

Published

Jan 23, 2026 (Jan 23, 2026)

Modified

Jun 17, 2026

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.

Vendors: free5gc
Products: nrf
Weakness: CWE-863
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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