CVE-2026-41447 FirmaCheck < 1.3.16 DLL Hijacking via Unvalidated OpenSSL Configuration Path
Local attackers can execute arbitrary code by placing a malicious OpenSSL configuration file in a specific directory, triggering DLL hijacking when the application starts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41447?
CVE-2026-41447 is a high-severity code injection vulnerability in Zucchetti S.p.a. FirmaCheck, published on 3 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-426
Which versions are affected by CVE-2026-41447?
How do I fix CVE-2026-41447?
No fix has been published for CVE-2026-41447 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-41447 being exploited?
There is no known exploitation of CVE-2026-41447 in the wild and no public exploit code.
Sources
Also known as GHSA-rv3c-h5mj-3hjw.