---
id: CVE-2026-41447
title: >-
  FirmaCheck for Windows before 1.3.16 contains a DLL hijacking vulnerability
  that allows local attackers to execute arbitrary code by placing a crafted
  openssl.cnf file in the unvalidated C:\Program Files (x86)\Common Files\SSL\
  directory…
summary: >-
  FirmaCheck for Windows before 1.3.16 contains a DLL hijacking vulnerability
  that allows local attackers to execute arbitrary code by placing a crafted
  openssl.cnf file in the unvalidated C:\Program Files (x86)\Common Files\SSL\
  directory…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-426
published: '2026-08-03'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-41447'
references:
  - url: >-
      https://www.vulncheck.com/advisories/firmacheck-dll-hijacking-via-unvalidated-openssl-configuration-path
    label: disclosure@vulncheck.com
  - url: >-
      https://www.zucchetti.it/it/cms/soluzioni/gestione-documentale/firme-e-marche/software-gestione-firme-digitali-firmacheck/software-gratuito-gestione-firme-e-documenti-descrizione.html
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00168
epssPercentile: 0.05345
ingestedAt: '2026-09-24T20:51:40.178Z'
---

## Overview

FirmaCheck for Windows before 1.3.16 contains a DLL hijacking vulnerability that allows local attackers to execute arbitrary code by placing a crafted openssl.cnf file in the unvalidated C:\Program Files (x86)\Common Files\SSL\ directory path. Attackers can write a malicious OpenSSL configuration file referencing an attacker-controlled DLL to achieve code execution at startup process privilege level when FirmaCheck.exe runs automatically at system startup.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.