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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 Reserved 2026-06-14 | Published 2026-06-15 | Updated 2026-06-15 | Assigner VulDB




MEDIUM: 6.9CVSS: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
HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
HIGH: 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

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
affected

Timeline

2026-06-14:Advisory disclosed
2026-06-14:VulDB entry created
2026-06-14:VulDB entry last update

Credits

nathan2 (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/370842 (VDB-370842 | Ritlabs TinyWeb Server Header libeay32.dll.html stack-based overflow) vdb-entry technical-description

vuldb.com/vuln/370842/cti (VDB-370842 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-12200 (CVE-2026-12200 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/829894 (Submit #829894 | RITLabs TinyWeb 1.94 Stack-based Buffer Overflow) third-party-advisory

nathan2.com/posts/tinyweb/ exploit

cve.org (CVE-2026-12200)

nvd.nist.gov (CVE-2026-12200)

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