CVE Watch13 oct 2026

CVE-2026-107737

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, and in pre-release 3.7.0.20369 when WebView2 is absent or cannot init

CVSS

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Sin CVSS

EPSS

0.1%

KEV

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Exploit Today

0-100

Publicado: 8 oct 2026 · Última mod.: 13 oct 2026 · CWE-129

EPSS · 30d

0.1%EPSS · 30 días0.1%

2026-10-092026-10-14

Descripción técnica

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, and in pre-release 3.7.0.20369 when WebView2 is absent or cannot initialize, ParseProtoUrl() accepts the signed host component of an its:// URL and FindHtmlWindowById() uses it directly as an index into gHtmlWindows. Opening a crafted CHM through the IE fallback backend with a negative or otherwise out-of-range window identifier can cause an out-of-bounds pointer read followed by an invalid object callback dereference and process termination. No fixed version is available as of this review.

Referencias oficiales

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