Vulnerability in Open5gs
CVE-2026-4988
A security flaw has been discovered in Open5GS 2.7.6. This issue affects the function smf_gx_cca_cb/smf_gy_cca_cb/smf_s6b of the component CCA Message Handler. The manipulation results in denial of service. The attack may be launched remot…
EPSS: 0.001 (27.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Open5gs — versions 2.7.6
- N/a Open5gs — versions 2.7.6
Weakness classification (CWE)
References
- VDB-353875 | Open5GS CCA Message smf_s6b denial of service (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-353875 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #771349 | Open5GS SMF v2.7.6 Denial of Service (Exploit, Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (issue-tracking, Exploit, Issue Tracking)
- cna@vuldb.com (issue-tracking, exploit, Issue Tracking)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2026-4988?
- CVE-2026-4988 is a low-severity vulnerability in Open5gs, classified under Improper Resource Shutdown or Release. CVSS score: 3.7/10. Published 2026-03-27.
- How severe is CVE-2026-4988?
- Low severity. CVSS v3 base score is 3.7 out of 10.