Vulnerability in Cesanta Mongoose
CVE-2026-6985
A weakness has been identified in Cesanta Mongoose up to 7.20. This vulnerability affects the function handle_opt of the file /src/net_builtin.c of the component TCP Option Handler. This manipulation of the argument optlen causes infinite…
EPSS: 0.006 (43.1th percentile) — read the EPSS interpretation.
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.
Affected products
- Cesanta Mongoose — versions 7.0, 7.1, 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 (Exploit, Third Party Advisory, exploit)
- cna@vuldb.com (Product, Release Notes, patch)
Frequently asked questions
- What is CVE-2026-6985?
- CVE-2026-6985 is a medium-severity vulnerability in Cesanta Mongoose, classified under Improper Resource Shutdown or Release. CVSS score: 5.3/10. Published 2026-04-25.
- How severe is CVE-2026-6985?
- Medium severity. CVSS v3 base score is 5.3 out of 10.