CVE-2026-41447

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.

Score

CVSS 4.0 8.5 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-08-03

Last modified

2026-10-23

Weaknesses

CWE-426

Affected products

• Firmacheck (Zucchetti S.p.a.)

References

• https://www.zucchetti.it/it/cms/soluzioni/gestione-documentale/firme-e-marche/software-gestione-firme-digitali-firmache…
• https://www.vulncheck.com/advisories/firmacheck-dll-hijacking-via-unvalidated-openssl-configuration-path