CVE-2026-41447

Estado: AplazadaAlta (8.5)—

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.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 8.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.17%
Percentil entre todas las CVEs puntuadas: 6
Fecha de la puntuación: 5/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation92 %
Impacto principalT1574.007 Path Interception by PATH Environment Variablestealth · execution95 %
Impacto secundarioT1059 Command and Scripting Interpreterexecution85 %

Acceso local con PR:L sin interacción del usuario (AV:L/AC:L/PR:L/UI:N). El hijacking de DLL mediante openssl.cnf en ruta no validada es T1574.007 (Searcher Order Hijacking); la ejecución de código arbitrario con privilegios de startup es T1059. CWE-426 confirma untrusted search path.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution Prevention Audit Threat Intelligence Program Restrict Web-Based Content Restrict File and Directory Permissions Privileged Account Management

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Firmacheck — Firmacheck^AI Openssl — Openssl^AI

CWE

CWE-426

Referencias

JSON original (NVD)

Mostrar

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          "options": [
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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      "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",
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  "lastModified": "2026-09-24T20:43:32.537",
  "sourceIdentifier": "disclosure@vulncheck.com"
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