CVE-2026-23512
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
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4Tags
Description
SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, there is a Untrusted Search Path vulnerability when Advanced Options setting is trigger. The application executes notepad.exe without specifying an absolute path when using the Advanced Options setting. On Windows, this allows execution of a malicious notepad.exe placed in the application's installation directory, leading to arbitrary code execution.
Analysis
SumatraPDF 3.5.2 and earlier on Windows contains an untrusted search path vulnerability in the Advanced Options feature that allows arbitrary code execution through a malicious notepad.exe placed in the application directory. An attacker with local access can exploit this when a user triggers the Advanced Options setting, as the application fails to specify an absolute path when launching notepad.exe. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. Vendor patch is available.
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