What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-15 · updated 2026-07-24
• Weakness: CWE-119

Description

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 products

• maximmasiutin TinyWeb: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 (+89)

References

• https://nathan2.com/posts/tinyweb/
• https://vuldb.com/cve/CVE-2026-12200
• https://vuldb.com/submit/829894
• https://vuldb.com/vuln/370842
• https://vuldb.com/vuln/370842/cti

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