# CVE-2026-23512

## Summary

- **CVE ID:** CVE-2026-23512
- **Severity:** HIGH
- **CVSS Score:** 8.6 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-426
- **Published:** Jan 14, 2026
- **Last Modified:** Mar 12, 2026

## 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.

## Affected Products

- sumatrapdfreader — sumatrapdf (<= 3.5.2)

## References

- [CNA](https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-rqg5-gj63-x4mv)
- [CNA](https://github.com/sumatrapdfreader/sumatrapdf/commit/2762e02a8cd7cb779c934a44257aac56ab7de673)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 9.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._