CVE-2026-12200
HighCVSS 7.3Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
A stack-based buffer overflow vulnerability has been detected in the libeay32.dll.html library of TinyWeb Server up to version 1.94 on Win32. The attack involves manipulating the Authorization argument in the Header Handler component. The exploit is publicly available and the vendor did not respond.
Risk Assessment
A remote attacker can cause a server crash or potentially execute arbitrary code, threatening system integrity and availability.
Recommendation
Immediately disconnect the TinyWeb Server and replace it with a more secure solution, as the vendor has not released a patch.
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Original NVD description (English source)
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 leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.