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CVE-2026-23512

🔴 HIGH

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 wit...

Published
Jan 14, 2026
Last Modified
Jan 16, 2026
Views
9
Bookmarks
0

Description

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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.

CVSS Scores

CVSS 3.1 8.6
8.6
HIGH
CVSS 2.0 8.6

References

github.com github.com

Additional Information

Source
security-advisories@github.com
State
Undergoing analysis

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