Description

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, remote attackers can inject control characters (e.g., %00) into the ueId parameter, triggering internal URL parsing errors (net/url: invalid control character). This exposes system implementation details and can aid in service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM service 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.

INFO

Published Date :

2026-02-23T23:53:03.146Z

Last Modified :

2026-02-25T16:17:49.585Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-69251 vulnerability.

Vendors Products
Free5gc
  • Udm
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-69251.

URL Resource
https://github.com/free5gc/free5gc/issues/751 cve-icon cve-icon
https://github.com/free5gc/free5gc/issues/76 cve-icon cve-icon
https://github.com/free5gc/free5gc/security/advisories/GHSA-pwxh-4qh4-hgpq cve-icon cve-icon
https://github.com/free5gc/udm/commit/504b14458d156558b3c0ade7107b86b3d5e72998 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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SS Confidentiality
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact