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CVE PROGRAM SOURCE RECORD5.4 Medium

CVE-2026-107735

SumatraPDF: `sumatrapdfrestrict.ini` never revokes any permission (fail-open policy initialization)

Description

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, InitializePolicies() starts the sumatrapdfrestrict.ini path with gPolicyRestrictions set to Perm::All and only ORs permission bits, so the INI file never revokes permissions. Deploying SumatraPDF with this INI file, including a malformed file or zero-valued permission settings, can silently bypass configured disk, network, printing, registry, clipboard, preference, and fullscreen restrictions. The -restrict command-line path works correctly and is not affected. No fixed version is available as of this review.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

sumatrapdfreader sumatrapdf

  • <= 3.6.1affected

References