CVE-2026-25880
SumatraPDF vulnerability analysis and mitigation

SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, the PDF reader allows execution of a malicious binary (explorer.exe) located in the same directory as the opened PDF when the user clicks File → “Show in folder”. This behavior leads to arbitrary code execution on the victim’s system with the privileges of the current user, without any warning or user interaction beyond the menu click.


SourceNVD

Related SumatraPDF vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-25880HIGH7.8
  • SumatraPDFSumatraPDF
  • cpe:2.3:a:sumatrapdfreader:sumatrapdf
NoYesFeb 09, 2026
CVE-2026-23512HIGH7.8
  • SumatraPDFSumatraPDF
  • cpe:2.3:a:sumatrapdfreader:sumatrapdf
NoYesJan 14, 2026
CVE-2026-25961HIGH7.5
  • SumatraPDFSumatraPDF
  • cpe:2.3:a:sumatrapdfreader:sumatrapdf
NoYesFeb 09, 2026
CVE-2026-25920MEDIUM5.5
  • SumatraPDFSumatraPDF
  • cpe:2.3:a:sumatrapdfreader:sumatrapdf
NoYesFeb 09, 2026
CVE-2026-23951MEDIUM5.5
  • SumatraPDFSumatraPDF
  • cpe:2.3:a:sumatrapdfreader:sumatrapdf
NoYesJan 22, 2026

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