CVE-2025-66719
CRITICALFree5gc NRF 1.4.0 - Incorrect Authorization via Crafted targetNF Value
Title source: llmDescription
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.
References (2)
Core 2
Core References
Exploit, Issue Tracking
https://github.com/free5gc/free5gc/issues/736
Issue Tracking, Patch
https://github.com/free5gc/nrf/pull/73
Scores
CVSS v3
9.1
EPSS
0.0031
EPSS Percentile
22.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (2)
free5gc/nrf
1.4.0
free5gc/nrf
0 - 1.4.1Go
Published
Jan 23, 2026
Tracked Since
Feb 18, 2026