CVE-2025-69250: free5GC has Improper Error Handling in UDM, Leading to Information Exposure
free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the service reliably leaks detailed internal error messages (e.g., strconv.ParseInt parsing errors) to remote clients when processing invalid pduSessionId inputs. This exposes implementation details and can be used for service fingerprinting. All deployments of free5GC using the UDM NudmUECM DELETE service may be vulnerable. 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-2025-69250?
The severity of CVE-2025-69250 is considered high due to the potential for information exposure.
How do I fix CVE-2025-69250?
To fix CVE-2025-69250, upgrade free5GC UDM to version 1.4.2 or later, where the improper error handling vulnerability has been addressed.
What type of information is exposed in CVE-2025-69250?
CVE-2025-69250 can leak detailed internal error messaging, which may contain sensitive information.
Which versions of free5GC UDM are affected by CVE-2025-69250?
Free5GC UDM versions up to and including 1.4.1 are affected by CVE-2025-69250.
What component of free5GC is impacted by CVE-2025-69250?
CVE-2025-69250 impacts the Unified Data Management (UDM) component of free5GC.