What is the CVSS score of CVE-2025-69251?

CVE-2025-69251 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.1%.

Which versions of Free5gc are affected by CVE-2025-69251?

Organizations using versions should be aware of moderate risk from CVE-2025-69251, a input validation vulnerability rated CVSS 5.3. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2025-69251?

Yes, a public proof-of-concept exploit is available for CVE-2025-69251. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-69251?

Within 30 days: Identify affected systems running versions and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Free5gc CVE-2025-69251

MEDIUM

Improper Input Validation (CWE-20)

2026-02-24 security-advisories@github.com

Code Injection Free5gc Udm

5.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.3 MEDIUM

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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 25, 2026 - 16:46 vuln.today

Public exploit code

Patch released

Feb 25, 2026 - 16:46 nvd

Patch available

CVE Published

Feb 24, 2026 - 00:16 nvd

MEDIUM 5.3

DescriptionGitHub Advisory

free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, remote attackers can inject control characters (e.g., %00) into the ueId parameter, triggering internal URL parsing errors (net/url: invalid control character). This exposes system implementation details and can aid in service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM service 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.

AnalysisAI

free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. [CVSS 5.3 MEDIUM]

Technical ContextAI

Classified as CWE-20 (Improper Input Validation). Affects Udm. free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, remote attackers can inject control characters (e.g., %00) into the ueId parameter, triggering internal URL parsing errors (net/url: invalid control character). This exposes system implementation details and can aid in service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM service may be affected. free5gc/u