High 8.6Published Jan 14, 2026

CVE-2026-23512SumatraPDF has an Untrusted Search Path in sumatrapdf/src/AppTools.cpp

Updated under an hour ago (Oct 27, 2026, 8:00 PM ET)

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Every CVE for sumatrapdfreader sumatrapdf

Exploited in the last 30 days

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: 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-426
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jan 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

sumatrapdfreader sumatrapdf sumatrapdfreader:sumatrapdf (from the name)	through 3.5.2	CNA record
sumatrapdfreader sumatrapdf sumatrapdfreader:sumatrapdf	through 3.5.2	NVD

References

References

https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-rqg5-gj63-x4mv	x-refsource-confirm, exploit, vendor-advisory
https://github.com/sumatrapdfreader/sumatrapdf/commit/2762e02a8cd7cb779c934a44257aac56ab7de673	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.