CVE-2025-69253CWE-209

free5GC vulnerable to improper error handling in NEF with information exposure

Medium · published February 24, 2026

CVSS v4.0
6.6
EPSS
0%
Percentile
33.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.6 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
EPSS
0.00404 · 33.5th percentile
Weakness
CWE-209 · Generation of Error Message Containing Sensitive Information
Published
2026-02-24T00:01Z
EPSS history
Timeline
  • 24 FEB 00:01Z
    free5GC vulnerable to improper error handling in NEF with information exposure
    cvelistv5