CVE-2025-69252: free5GC has Null Pointer Dereference in UDM, Leading to Service Panic
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 Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2025-69252?
CVE-2025-69252 has a moderate severity due to the potential for service disruption in affected versions.
What versions of free5GC are affected by CVE-2025-69252?
Free5GC UDM versions up to and including 1.4.1 are affected by CVE-2025-69252.
How do I fix CVE-2025-69252?
To remediate CVE-2025-69252, upgrade free5GC UDM to a version later than 1.4.1.
What could happen if I don't address CVE-2025-69252?
If CVE-2025-69252 is not addressed, it may lead to a NULL Pointer Dereference and subsequent service panic.
What is the primary impact of CVE-2025-69252 on users?
The primary impact of CVE-2025-69252 on users is the risk of service interruptions in the 5G mobile core network.