What’s Vulnerable › Vulnerabilities

CVE-2025-66719

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-23 · updated 2026-06-17
• Weakness: CWE-863

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.

Affected products

• free5gc nrf: 1.4.0

References

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

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