CVE-2026-12200 — Ritlabs TinyWeb Server Header libeay32.dll.html stack-based overflow

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Ritlabs / TinyWeb Server	affected 1.0; affected 1.1; affected 1.2; affected 1.3; affected 1.4; affected 1.5; affected 1.6; affected 1.7; affected 1.8; affected 1.9; affected 1.10; affected 1.11; affected 1.12; affected 1.13; affected 1.14; affected 1.15; affected 1.16; affected 1.17; affected 1.18; affected 1.19; affected 1.20; affected 1.21; affected 1.22; affected 1.23; affected 1.24; affected 1.25; affected 1.26; affected 1.27; affected 1.28; affected 1.29; affected 1.30; affected 1.31; affected 1.32; affected 1.33; affected 1.34; affected 1.35; affected 1.36; affected 1.37; affected 1.38; affected 1.39; affected 1.40; affected 1.41; affected 1.42; affected 1.43; affected 1.44; affected 1.45; affected 1.46; affected 1.47; affected 1.48; affected 1.49; affected 1.50; affected 1.51; affected 1.52; affected 1.53; affected 1.54; affected 1.55; affected 1.56; affected 1.57; affected 1.58; affected 1.59; affected 1.60; affected 1.61; affected 1.62; affected 1.63; affected 1.64; affected 1.65; affected 1.66; affected 1.67; affected 1.68; affected 1.69; affected 1.70; affected 1.71; affected 1.72; affected 1.73; affected 1.74; affected 1.75; affected 1.76; affected 1.77; affected 1.78; affected 1.79; affected 1.80; affected 1.81; affected 1.82; affected 1.83; affected 1.84; affected 1.85; affected 1.86; affected 1.87; affected 1.88; affected 1.89; affected 1.90; affected 1.91; affected 1.92; affected 1.93; affected 1.94

Vendor / product

Versions

Ritlabs / TinyWeb Server

affected 1.0; affected 1.1; affected 1.2; affected 1.3; affected 1.4; affected 1.5; affected 1.6; affected 1.7; affected 1.8; affected 1.9; affected 1.10; affected 1.11; affected 1.12; affected 1.13; affected 1.14; affected 1.15; affected 1.16; affected 1.17; affected 1.18; affected 1.19; affected 1.20; affected 1.21; affected 1.22; affected 1.23; affected 1.24; affected 1.25; affected 1.26; affected 1.27; affected 1.28; affected 1.29; affected 1.30; affected 1.31; affected 1.32; affected 1.33; affected 1.34; affected 1.35; affected 1.36; affected 1.37; affected 1.38; affected 1.39; affected 1.40; affected 1.41; affected 1.42; affected 1.43; affected 1.44; affected 1.45; affected 1.46; affected 1.47; affected 1.48; affected 1.49; affected 1.50; affected 1.51; affected 1.52; affected 1.53; affected 1.54; affected 1.55; affected 1.56; affected 1.57; affected 1.58; affected 1.59; affected 1.60; affected 1.61; affected 1.62; affected 1.63; affected 1.64; affected 1.65; affected 1.66; affected 1.67; affected 1.68; affected 1.69; affected 1.70; affected 1.71; affected 1.72; affected 1.73; affected 1.74; affected 1.75; affected 1.76; affected 1.77; affected 1.78; affected 1.79; affected 1.80; affected 1.81; affected 1.82; affected 1.83; affected 1.84; affected 1.85; affected 1.86; affected 1.87; affected 1.88; affected 1.89; affected 1.90; affected 1.91; affected 1.92; affected 1.93; affected 1.94

CWE

CWE-121, CWE-119

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.