Auth bypass in Free5gc
CVE-2026-44315
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create…
Vulnerability class: Broken Access Control
EPSS: 0.000 (14.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.
Affected products
- Free5gc — versions < 4.2.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Exploit, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2026-44315?
- CVE-2026-44315 is a critical-severity vulnerability in Free5gc, classified under Missing Authorization. CVSS score: 9.4/10. Published 2026-05-27.
- How severe is CVE-2026-44315?
- Critical severity. CVSS v3 base score is 9.4 out of 10.