CVE-2026-25961

SumatraPDF is a multi-format reader for Windows. In 3.5.0 through 3.5.2, SumatraPDF's update mechanism disables TLS hostname verification INTERNETFLAGIGNORECERTCNINVALID and executes installers without signature checks. A network attacker with any valid TLS certificate e.g., Let's Encrypt can...

sumatrapdf 安全漏洞

Sumatrapdf is an open-source PDF reader developed by SumatraPDF Reader. Versions 3.5.0 to 3.5.2 of SumatraPDF have security vulnerabilities. These vulnerabilities stem from the update mechanism disabling TLS hostname verification and failing to check the installer’s signature, which may allow...