CVE-2025-66719CRITICAL 9.1EPSS p22.2%

CVE-2025-66719CVE-2025-66719

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.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.31% probability of exploitation · percentile 22.2% · 2026-06-18T12:00:27Z
Published2026-01-23
Last modified2026-02-11

Underlying weaknesses· 1

CWE-863

References

  1. https://github.com/free5gc/free5gc/issues/736
  2. https://github.com/free5gc/nrf/pull/73

1

TypeTargetConfidenceTier
WeaknessIncorrect Authorizationcwe-8630%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.