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CVE-2025-69253

MEDIUM

5.3

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/24/2026

Last Modified2/25/2026

Sourcenvd

Honeypot Sightings0

Affected Products

free5gc:udr

Weaknesses (CWE)

CWE-209

References

https://github.com/free5gc/free5gc/issues/753(security-advisories@github.com)

https://github.com/free5gc/free5gc/security/advisories/GHSA-cj2h-x8qm-xgwc(security-advisories@github.com)

https://github.com/free5gc/udr/commit/754d23b03755ad59077ed529ce3b971e477080c4(security-advisories@github.com)

https://github.com/free5gc/udr/pull/56(security-advisories@github.com)

IOC Correlations

No correlations recorded

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