What is CVE-2026-44330?

CVE-2026-44330 is a critical-severity vulnerability in Free5gc, classified under Incorrect Authorization. CVSS score: 10.0/10. Published 2026-05-27.

How severe is CVE-2026-44330?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Auth bypass in Free5gc

CVE-2026-44330

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the nnef-pfdmanagement route group without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can…

Vulnerability class: Broken Access Control

EPSS: 0.000 (15.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H.

Affected products

Free5gc — versions < 4.2.2

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-44330?: CVE-2026-44330 is a critical-severity vulnerability in Free5gc, classified under Incorrect Authorization. CVSS score: 10.0/10. Published 2026-05-27.
How severe is CVE-2026-44330?: Critical severity. CVSS v3 base score is 10.0 out of 10.