What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-24 · updated 2026-06-17
• Weakness: CWE-476

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

• free5gc udm: through 1.4.1

References

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

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