CVE-2026-41447
FirmaCheck < 1.3.16 DLL Hijacking via Unvalidated OpenSSL Configuration Path
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-426 |
| Vendor | zucchetti s.p.a. |
| Product | firmacheck |
| Published | Aug 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Zucchetti S.p.a. / FirmaCheck
0 < 1.3.16
References
zucchetti.it: 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 vulncheck.com: https://www.vulncheck.com/advisories/firmacheck-dll-hijacking-via-unvalidated-openssl-configuration-path
Credits
Andrea Intilangelo VulnCheck