CVE-2025-69253 free5GC vulnerable to improper error handling in NEF with information exposure
Remote attackers can obtain internal error details from the NEF component, aiding service fingerprinting in free5GC deployments.
- 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-2025-69253?
CVE-2025-69253 is a medium-severity vulnerability in free5gc udr, published on 24 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
free5GC is an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of the User Data Repository are affected by Improper Error Handling with Information Exposure. The NEF component reliably leaks internal parsing error details (e.g., invalid character 'n' after top-level value) to remote clients, which can aid attackers in service fingerprinting. All deployments of free5GC using the Nnef_PfdManagement service may be vulnerable. free5gc/udr pull request 56 contains a patch. No direct workaround is available at the application level. Applying the official patch is recommended.
Weakness: CWE-209
Which versions are affected by CVE-2025-69253?
It affects 1 product.
Products include Free5gc Udr.
How do I fix CVE-2025-69253?
No fix has been published for CVE-2025-69253 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-69253 being exploited?
There is no known exploitation of CVE-2025-69253 in the wild and no public exploit code.
Other vulnerabilities in free5gc udr
Sources
Also known as GHSA-cj2h-x8qm-xgwc.