Vulnerability · Published Feb 23, 2026 · Assigned by GitHub_M

CVE-2025-69252free5GC has Null Pointer Dereference in UDM, Leading to Service Panic

Medium 6.6

In plain English

A medium-severity null pointer dereference in udm from free5gc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 4.0)6.6Medium

Exploit odds (30 days)0.6%top 51.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
free5gc	udm	<= 1.4.1

Weakness: CWE-476 · 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

References

https://github.com/free5gc/free5gc/security/advisories/GHSA-v8cv-qvf6-9rpm x_refsource_CONFIRM
https://github.com/free5gc/free5gc/issues/752 x_refsource_MISC
https://github.com/free5gc/udm/pull/76 x_refsource_MISC
https://github.com/free5gc/udm/commit/504b14458d156558b3c0ade7107b86b3d5e72998 x_refsource_MISC