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CVE-2025-69252

free5GC has Null Pointer Dereference in UDM, Leading to Service Panic

Published: Feb 23, 2026Updated: Feb 25, 2026 Sources: CVE List NVDCWE-476
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.5%
Top 60.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 have a NULL Pointer Dereference vulnerability. Remote unauthenticated attackers can trigger a service panic (Denial of Service) by sending a crafted PUT request with an unexpected ueId, crashing the UDM service. All deployments of free5GC using the UDM component 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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-476

Affected Products

udmfree5gc
Mixed
Networking Infrastructure / network-management
free5gcoss-projectNetworking Infrastructureaka free5gc udm, free5gc smf, udm, smf

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
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References

https://github.com/free5gc/free5gc/security/advisories/GHSA-v8cv-qvf6-9rpm
github.com
https://github.com/free5gc/free5gc/issues/752
github.com
https://github.com/free5gc/udm/pull/76
github.com
and 1 more references View all →

Timeline

Published
Feb 23, 2026
Last Updated
Feb 25, 2026

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