CVE-2025-66719
Free5gc NRF is vulnerable to scope validation bypass via maliciously crafted targetNF value
9.1
CRITICAL
CVSS 3.1
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.
How to fix CVE-2025-66719
To remediate CVE-2025-66719, upgrade the affected package to a fixed version below.
- Go/github.com/free5gc/nrf—upgrade to 1.4.1 or later
Is CVE-2025-66719 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2025-66719.
Affected packages (1)
- from 0, < 1.4.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |