CVE-2025-69208 free5GC UDR's NEF incorrectly returns 500 for missing PFD data (UDR 404) in Nnef_PfdManagement GET request

Low 2.7 Published 23 Feb 2026 Updated 25 Feb 2026

Attackers can extract internal error details from free5GC UDR NEF responses, aiding in fingerprinting the server software and logic flows.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-69208?

CVE-2025-69208 is a low-severity vulnerability in free5gc udr, published on 23 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

free5GC UDR is the user data repository (UDR) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Versions prior to 1.4.1 contain an Improper Error Handling vulnerability with Information Exposure. All deployments of free5GC using the Nnef_PfdManagement service may be affected. The NEF component reliably leaks internal parsing errors (e.g., invalid character 'n' after top-level value) to remote clients. This can aid attackers in fingerprinting server software and logic flows. Version 1.4.1 fixes the issue. There is no direct workaround at the application level. The recommended mitigation is to apply the provided patch.

Weakness: CWE-209

Which versions are affected by CVE-2025-69208?

It affects 1 product.

Products include Free5gc Udr.

How do I fix CVE-2025-69208?

No fix has been published for CVE-2025-69208 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-69208 being exploited?

There is no known exploitation of CVE-2025-69208 in the wild and no public exploit code.

Sources

Also known as GHSA-f3pc-w7jp-4jh2.