Buffer overflow in Open5gs
CVE-2026-8186
A vulnerability was detected in Open5GS up to 2.7.7. This affects the function ogs_sbi_client_send_via_scp_or_sepp in the library lib/sbi/client.c of the component NF. Performing a manipulation results in out-of-bounds read. The attack is possible to be carried out remotely. The patch is named d5bc487fcf9ea87d2b03f2ef95123af344773bfb. It is suggested to install a patch to address this issue.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.009 (58.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.009 · change: +0.004
Affected products
- Open5gs
- Open5gs — versions 2.7.0, 2.7.1, 2.7.2
Weakness classification (CWE)
References
- github.com/open5gs/open5gs/ (Product, product)
- github.com/open5gs/open5gs/commit/d5bc487fcf9ea87d2b03f2ef95123af344773bfb (Patch, patch)
- github.com/open5gs/open5gs/issues/4491 (issue-tracking, Exploit, Issue Tracking)
- github.com/open5gs/open5gs/pull/4496 (issue-tracking, Patch, patch, Issue Tracking)
- vuldb.com/submit/800024 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/vuln/362338 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/362338/cti (signature, Permissions Required, permissions-required, VDB Entry)
Frequently asked questions
- What is CVE-2026-8186?
- CVE-2026-8186 is a medium-severity vulnerability in Open5gs, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-05-09.
- How severe is CVE-2026-8186?
- Medium severity. CVSS v3 base score is 5.3 out of 10.