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CVE-2026-12200

Ritlabs TinyWeb Server Header libeay32.dll.html stack-based overflow

HIGH

7.3

CVSS Score

Published: June 15, 2026 at 12:15 AM UTC

Updated: July 24, 2026 at 12:10 PM UTC

1 product affected across 1 vendorTinyweb

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Severity

HIGH7.3

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tinyweb · Ritlabs

60%

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

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical Description

Source: cverecord

https://vuldb.com/vuln/370842

SignaturePermissions Required

Source: cverecord

https://vuldb.com/vuln/370842/cti

Third Party Advisory

Source: cverecord

https://vuldb.com/cve/CVE-2026-12200

Third Party Advisory

Source: cverecord

https://vuldb.com/submit/829894

Exploit

Source: cverecord

https://nathan2.com/posts/tinyweb/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHVulDB

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-121CWE-119

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