CVE-2025-66719

CRITICAL EPSS 22.4%
Published Jan 23, 20265mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Critical
Find Similar
Published Jan 23, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
22.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 1

VendorProductVersionRange
free5gcnrf1.4.0any

References 2

  • github.com https://github.com/free5gc/free5gc/issues/736
    ExploitIssue Tracking
  • github.com https://github.com/free5gc/nrf/pull/73
    Issue TrackingPatch

Remediation

  • github.com https://github.com/free5gc/nrf/pull/73
    Issue TrackingPatch