Buffer overflow in Ritlabs Tinyweb Server
CVE-2026-12200
A security vulnerability has been detected in Ritlabs TinyWeb Server up to 1.94 on Win32. This impacts an unknown function in the library libeay32.dll.html of the component Header Handler. The manipulation of the argument Authorization lea…
Vulnerability class: Buffer Overflow
EPSS: 0.003 (24.8th percentile) — read the EPSS interpretation.
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.
Affected products
- Ritlabs Tinyweb Server — versions 1.0, 1.1, 1.2
Weakness classification (CWE)
References
- cna@vuldb.com (exploit)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-12200?
- CVE-2026-12200 is a high-severity vulnerability in Ritlabs Tinyweb Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.3/10. Published 2026-06-15.
- How severe is CVE-2026-12200?
- High severity. CVSS v3 base score is 7.3 out of 10.