What is CVE-2026-42081?

CVE-2026-42081 is a medium-severity vulnerability in Free5gc, classified under CWE-358. CVSS score: 6.1/10. Published 2026-05-27.

How severe is CVE-2026-42081?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Free5gc

CVE-2026-42081

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the AMF in Free5GC does not verify the UE Security Capabilities received in NGAP PathSwitchRequest messages against its locally stored values, as mandated by…

EPSS: 0.000 (9.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L.

Affected products

Free5gc — versions < 4.2.2

Weakness classification (CWE)

CWE-358

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42081?: CVE-2026-42081 is a medium-severity vulnerability in Free5gc, classified under CWE-358. CVSS score: 6.1/10. Published 2026-05-27.
How severe is CVE-2026-42081?: Medium severity. CVSS v3 base score is 6.1 out of 10.