CVE-2025-69252CWE-476

free5GC has Null Pointer Dereference in UDM, Leading to Service Panic

Medium · published February 23, 2026

CVSS v4.0
6.6
EPSS
1%
Percentile
47.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.6 · MEDIUM
Vector
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
EPSS
0.00592 · 47.7th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-02-23T23:56Z
EPSS history
Timeline
  • 23 FEB 23:56Z
    free5GC has Null Pointer Dereference in UDM, Leading to Service Panic
    cvelistv5