Auth bypass in Open5gs
CVE-2026-86212
A vulnerability has been found in Open5GS 2.7.7/2.8.0. This vulnerability affects unknown code of the component AMF/MME. The manipulation leads to improper authorization. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The identifier of the patch is 9468de94caed2fc940f4a23cbf734651896d0fde. To fix this issue, it is recommended to deploy a patch.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (41.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Open5gs — versions 2.7.7, 2.8.0
Weakness classification (CWE)
References
- vuldb.com/vuln/399348 (vdb-entry)
- vuldb.com/vuln/399348/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-86212 (third-party-advisory)
- vuldb.com/submit/896623 (third-party-advisory)
- github.com/open5gs/open5gs/issues/4680 (issue-tracking, exploit)
- github.com/open5gs/open5gs/commit/9468de94caed2fc940f4a23cbf734651896d0fde (patch)
- github.com/open5gs/open5gs/ (product)
Frequently asked questions
- What is CVE-2026-86212?
- CVE-2026-86212 is a medium-severity vulnerability in Open5gs, classified under Incorrect Privilege Assignment. CVSS score: 4.3/10. Published 2026-09-06.
- How severe is CVE-2026-86212?
- Medium severity. CVSS v3 base score is 4.3 out of 10.