CVE-2026-25880 HIGH

CVE-2026-25880: Untrusted Search Path in SumatraPDF Reader (explorer.exe on Windows)

Vendor Sumatrapdfreader
Product sumatrapdf
Weakness CWE-426
Published February 9, 2026
Last update February 10, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 9, 2026 CVE published
February 10, 2026 Record updated