CVE-2025-69248

MEDIUM EPSS 42.7%
Published Feb 23, 20264mo ago · Modified Feb 25, 20264mo ago
6.6 CVSS 4.0
Medium
Find Similar
Published Feb 23, 2026 4mo ago
Last Modified Feb 25, 2026 4mo ago

Description

free5GC is an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of free5GC's AMF service have a Buffer Overflow vulnerability leading to Denial of Service. Remote unauthenticated attackers can crash the AMF service by sending a specially crafted NAS Registration Request with a malformed 5GS Mobile Identity, causing complete denial of service for the 5G core network. All deployments of free5GC using the AMF component may be affected. Pull request 43 of the free5gc/nas repo contains a fix. No direct workaround is available at the application level. Applying the official patch is recommended.

CVSS Details

Base Score
6.6
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
42.7% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-129

Affected Products 1

VendorProductVersionRange
free5gcamf* ≤1.4.1

References 4

  • github.com https://github.com/free5gc/free5gc/issues/747
    ExploitIssue TrackingPatchVendor Advisory
  • github.com https://github.com/free5gc/free5gc/security/advisories/GHSA-h6xc-8vvf-jcjp
    PatchVendor Advisory
  • github.com https://github.com/free5gc/nas/commit/0329a7ac3f314f210366c1b3c33dc29eded4ac5f
    Patch
  • github.com https://github.com/free5gc/nas/pull/43
    Issue TrackingPatch

Remediation

  • github.com https://github.com/free5gc/free5gc/issues/747
    ExploitIssue TrackingPatchVendor Advisory
  • github.com https://github.com/free5gc/free5gc/security/advisories/GHSA-h6xc-8vvf-jcjp
    PatchVendor Advisory
  • github.com https://github.com/free5gc/nas/commit/0329a7ac3f314f210366c1b3c33dc29eded4ac5f
    Patch
  • github.com https://github.com/free5gc/nas/pull/43
    Issue TrackingPatch