Auth bypass in Open5gs
CVE-2026-10157
A vulnerability was identified in Open5GS up to 2.7.6. This impacts an unknown function of the file src/amf/ngap-handler.c of the component NGAP PathSwitchRequest Message Handler. The manipulation leads to improper authentication. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The identifier of the patch is a188e36b1741ffc2252133f59b1bda4f14d3cb5c. It is suggested to install a patch to address this issue.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (34.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Open5gs — versions 2.7.0, 2.7.1, 2.7.2
Weakness classification (CWE)
References
- vuldb.com/vuln/367410 (vdb-entry)
- vuldb.com/vuln/367410/cti (signature, permissions-required)
- vuldb.com/submit/818939 (third-party-advisory)
- github.com/open5gs/open5gs/issues/4393 (issue-tracking, exploit)
- github.com/open5gs/open5gs/pull/4557 (issue-tracking, patch)
- github.com/open5gs/open5gs/commit/a188e36b1741ffc2252133f59b1bda4f14d3cb5c (patch)
- github.com/open5gs/open5gs/ (product)
- vuldb.com/cve/CVE-2026-10157 (third-party-advisory)
Frequently asked questions
- What is CVE-2026-10157?
- CVE-2026-10157 is a high-severity vulnerability in Open5gs, classified under Improper Authentication. CVSS score: 7.3/10. Published 2026-05-31.
- How severe is CVE-2026-10157?
- High severity. CVSS v3 base score is 7.3 out of 10.