CVE-2026-25961

HIGH

7.5

Description

SumatraPDF is a multi-format reader for Windows. In 3.5.0 through 3.5.2, SumatraPDF's update mechanism disables TLS hostname verification (INTERNET_FLAG_IGNORE_CERT_CN_INVALID) and executes installers without signature checks. A network attacker with any valid TLS certificate (e.g., Let's Encrypt) can intercept the update check request, inject a malicious installer URL, and achieve arbitrary code execution.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurREQUIRED

Publie2/9/2026

Derniere modification2/20/2026

Sourcenvd

Observations honeypot0

Produits affectes

sumatrapdfreader:sumatrapdf

Faiblesses (CWE)

CWE-295CWE-494CWE-494

References

https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-xpm2-rr5m-x96q(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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