CVE-2026-23512

HIGH8.6

SumatraPDF has an Untrusted Search Path in sumatrapdf/src/AppTools.cpp

Published Jan 14, 2026

Modified 2 months ago

Details

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.

References

WEB

https://github.com/sumatrapdfreader/sumatrapdf/commit/2762e02a8cd7cb779c934a44257aac56ab7de673

WEB

https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-rqg5-gj63-x4mv

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-23512

CVSS Analysis

CVSS v3.1

8.6

Exploitability

Attack Vector