What is the CVSS score of CVE-2024-56921?

CVE-2024-56921 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: 0.9%.

Which versions of Open5gs are affected by CVE-2024-56921?

Organizations using Open5gs face notable risk from CVE-2024-56921, a resource exhaustion vulnerability rated CVSS 7.5.. A patch is available.

Is there a public PoC exploit available for CVE-2024-56921?

Yes, a public proof-of-concept exploit is available for CVE-2024-56921. Prioritise patching immediately. EPSS: 0.9%.

How to fix or mitigate CVE-2024-56921?

Within 30 days: Identify all affected systems running Open5gs and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Open5gs CVE-2024-56921

HIGH

Uncontrolled Resource Consumption (CWE-400)

2025-02-03 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 - 18:07 vuln.today

Patch released

Mar 28, 2026 - 18:07 nvd

Patch available

PoC Detected

Apr 22, 2025 - 14:58 vuln.today

Public exploit code

CVE Published

Feb 03, 2025 - 20:15 nvd

HIGH 7.5

DescriptionCVE.org

An issue was discovered in Open5gs v2.7.2. InitialUEMessage, Registration request sent at a specific time can crash AMF due to incorrect error handling of gmm_state_exception() function upon receipt of the Nausf_UEAuthentication_Authenticate response.

AnalysisAI

An issue was discovered in Open5gs v2.7.2. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. An issue was discovered in Open5gs v2.7.2. InitialUEMessage, Registration request sent at a specific time can crash AMF due to incorrect error handling of gmm_state_exception() function upon receipt of the Nausf_UEAuthentication_Authenticate response. Affected products include: Open5Gs.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.