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CVE-2026-1973

5.3 · MEDIUM

A vulnerability was determined in Free5GC up to 4.1.0.

Published Feb 6, 2026CWE-404EPSS 0.61%

Overview

CVE-2026-1973 is a medium-severity vulnerability. It was published on February 6, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/free5gc/free5gc/GitHubgithub.com/free5gc/free5gc/issues/815GitHubgithub.com/free5gc/free5gc/issues/815#issue-3832032062GitHubgithub.com/free5gc/smf/pull/189Refvuldb.com/?ctiid.344495Refvuldb.com/?id.344495Refvuldb.com/?submit.743236

How CyberStrike helps

Frequently asked questions

What is CVE-2026-1973?

CVE-2026-1973 is a medium-severity vulnerability. It was published on February 6, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-1973?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-1973?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-1973?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-1973 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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