CVE-2026-23512

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 v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/sumatrapdfreader/sumatrapdf/commit/2762e02a8cd7cb779c934a44257aac56ab7de673	Patch
https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-rqg5-gj63-x4mv	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:sumatrapdfreader:sumatrapdf:*:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

History

03 Feb 2026, 17:56

Type	Values Removed	Values Added
First Time		Sumatrapdfreader Microsoft Microsoft windows Sumatrapdfreader sumatrapdf
CPE		cpe:2.3:o:microsoft:windows:-:::::::* cpe:2.3:a:sumatrapdfreader:sumatrapdf::::::::
References	~~() https://github.com/sumatrapdfreader/sumatrapdf/commit/2762e02a8cd7cb779c934a44257aac56ab7de673 -~~	() https://github.com/sumatrapdfreader/sumatrapdf/commit/2762e02a8cd7cb779c934a44257aac56ab7de673 - Patch
References	~~() https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-rqg5-gj63-x4mv -~~	() https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-rqg5-gj63-x4mv - Exploit, Vendor Advisory

Information

Published : 2026-01-14 21:15

Updated : 2026-02-03 17:56

NVD link : CVE-2026-23512

Mitre link : CVE-2026-23512

CVE.ORG link : CVE-2026-23512

JSON object : View

Products Affected

microsoft

windows

sumatrapdfreader

sumatrapdf

CWE

CWE-426

Untrusted Search Path

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