CVE-2026-43641
Softaculous Virtualizor before 3.2.9 (Patch 9) and 3.0.0 contains an OS command injection vulnerability in the billing module handler that allows unauthenticated remote attackers to execute arbitrary commands as root by bypassing authentication through specific parameter combinations. Attackers can deserialize a crafted billing_data POST field and inject shell payloads through the uid field, which is passed unmodified to proc_open() via vexec(), yielding complete control of the host and all managed VPS instances.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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: 9.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.03%
- Percentil entre todas las CVEs puntuadas: 87
- Fecha de la puntuación: 6/10/2026
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.
- Explotación
T1190Exploit Public-Facing Applicationinitial access85 % - Impacto principal
T1059.007JavaScriptexecution95 % - Impacto secundario
T1098.002Additional Email Delegate Permissionspersistence · privilege escalation75 % - Impacto secundario
T1543.002Systemd Servicepersistence · privilege escalation70 %
Vulnerabilidad de inyección de comandos (CWE-78) en módulo de facturación accesible sin autenticación (AV:N/PR:N) permite ejecución remota como root via deserialización maliciosa del campo uid hacia proc_open().
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
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-78
Referencias
- https://www.virtualizor.com/blog/virtualizor-3-2-9-launched-release-candidate-patch-9/
- https://www.virtualizor.com/blog/virtualizor-3-3-0/
- https://www.vulncheck.com/advisories/softaculous-virtualizor-os-command-injection-via-billing-module-handler
- https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rce
JSON original (NVD)
Mostrar
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