Ritlabs TinyWeb Server Header libeay32.dll.html stack-based overflow_CVE-2026-12200

6.9 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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.

Basic Information

ID CVE-2026-12200

Source VulDB

Published Jun 15, 2026 at 00:15

Affected Product

Vendor Ritlabs

Product TinyWeb Server

Version 1.0

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

CWE Classification

CWE-121 CWE-119

References

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    "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.",
    "published": "2026-06-15T00:15:08.714Z",
    "modified": "2026-06-15T00:15:08.714Z",
    "type": "cve",
    "title": "Ritlabs TinyWeb Server Header libeay32.dll.html stack-based overflow",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/370842\nhttps://vuldb.com/vuln/370842/cti\nhttps://vuldb.com/cve/CVE-2026-12200\nhttps://vuldb.com/submit/829894\nhttps://nathan2.com/posts/tinyweb/",
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    "sourceHref": "",
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    "cvss2": [],
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    "category_name": "CVE",
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    "product": "TinyWeb Server",
    "version": "1.0",
    "vendor": "Ritlabs",
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}