CVE-2026-75439: NULL pointer dereference vulnerability

An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component

7.5 CVSS 3.1 High EPSS 0.76% · top 46.6% CWE-476 · NULL pointer dereference Deferred

7.5CVSS 3.1 base score

0.76%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

5References

14 Sep 2026Last modified by NVD

Description

An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component

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

References

Link	Tags
https://gist.github.com/hackeryounow/0f434c03008462e6eec3b43ed3cd12d8
https://github.com/free5gc/free5gc/issues/1059
https://github.com/free5gc/free5gc/issues/1059.https://github.com/free5gc/go-upf/pull/97
https://github.com/free5gc/go-upf/pull/97
https://github.com/hackeryounow/5GCVulDB/tree/main/CVE-2026-75439

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.2CVE-2026-21525Windows Remote Access Connection Manager null pointer dereference DoSWindows Remote Access Connection Manager contains a null pointer dereference (CWE-476) that lets an unauthorized attacker deny service locally. The f…KEVEPSS 4.8%analysed10 Feb 2026

Source: NIST National Vulnerability Database (record CVE-2026-75439), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.