CVE-2025-69252

MEDIUM EPSS 39.6%
Published Feb 24, 20264mo ago · Modified Jun 17, 20261w ago
6.6 CVSS 4.0
Medium
Find Similar
Published Feb 24, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

Description

free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 have a NULL Pointer Dereference vulnerability. Remote unauthenticated attackers can trigger a service panic (Denial of Service) by sending a crafted PUT request with an unexpected ueId, crashing the UDM service. All deployments of free5GC using the UDM component may be affected. free5gc/udm pull request 76 contains a fix for the issue. 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
39.6% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 1

VendorProductVersionRange
free5gcudm* ≤1.4.1

References 4

  • github.com https://github.com/free5gc/free5gc/issues/752
    ExploitIssue TrackingPatchVendor Advisory
  • github.com https://github.com/free5gc/free5gc/security/advisories/GHSA-v8cv-qvf6-9rpm
    PatchVendor Advisory
  • github.com https://github.com/free5gc/udm/commit/504b14458d156558b3c0ade7107b86b3d5e72998
    Patch
  • github.com https://github.com/free5gc/udm/pull/76
    Issue Tracking

Remediation

  • github.com https://github.com/free5gc/free5gc/issues/752
    ExploitIssue TrackingPatchVendor Advisory
  • github.com https://github.com/free5gc/free5gc/security/advisories/GHSA-v8cv-qvf6-9rpm
    PatchVendor Advisory
  • github.com https://github.com/free5gc/udm/commit/504b14458d156558b3c0ade7107b86b3d5e72998
    Patch