What is the CVSS score of CVE-2025-29339?

CVE-2025-29339 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.2%.

Which versions of Open5gs are affected by CVE-2025-29339?

Organizations using UPF in Open5GS UPF face notable risk from CVE-2025-29339 rated CVSS 7.5. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2025-29339?

Yes, a public proof-of-concept exploit is available for CVE-2025-29339. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-29339?

Within 7 days: Identify all affected systems running UPF in Open5GS UPF and apply vendor patches promptly. Monitor vendor channels for patch availability.

Open5gs CVE-2025-29339

HIGH

Reachable Assertion (CWE-617)

2025-04-22 cve@mitre.org

Denial Of Service Open5gs

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:38 vuln.today

PoC Detected

Jun 19, 2025 - 00:23 vuln.today

Public exploit code

CVE Published

Apr 22, 2025 - 17:16 nvd

HIGH 7.5

DescriptionCVE.org

An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. When processing a PFCP Session Establishment Request with PDN Type=0, the UPF fails to handle the invalid value propagated from SMF (or via direct attack), triggering a fatal assertion check and causing a daemon crash.

AnalysisAI

An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-617. An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. When processing a PFCP Session Establishment Request with PDN Type=0, the UPF fails to handle the invalid value propagated from SMF (or via direct attack), triggering a fatal assertion check and causing a daemon crash. Affected products include: Open5Gs.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.