Vulnerability in Open5gs

CVE-2026-8266

A vulnerability was detected in Open5GS up to 2.7.7. This affects the function gsm_build_pdu_session_establishment_accept of the file /src/smf/gsm-build.c of the component SMF. The manipulation results in denial of service. The attack can…

EPSS: 0.000 (2.9th percentile) — read the EPSS interpretation.

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.

Affected products

  • Open5gs
  • N/a Open5gs — versions 2.7.0, 2.7.1, 2.7.2

Weakness classification (CWE)

References

  • cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
  • cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
  • cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
  • cna@vuldb.com (issue-tracking, Exploit, exploit, Issue Tracking)
  • cna@vuldb.com (Product, product)

Frequently asked questions

What is CVE-2026-8266?
CVE-2026-8266 is a medium-severity vulnerability in Open5gs, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2026-05-11.
How severe is CVE-2026-8266?
Medium severity. CVSS v3 base score is 4.3 out of 10.