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9.3
CVE-2026-43641: Virtualizor lets attackers run commands as root
CVE-2026-43641 · published 5 days ago
Summary
The Virtualizor control panel (versions before 3.2.9) can be tricked into running any command on the server without a password. This gives a remote attacker full control over the host and all virtual private servers it manages. Update to the latest version or apply the vendor’s patch as soon as possible.
What to do
- Update softaculous virtualizor to version 3.2.9 (Patch 9) or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| softaculous | virtualizor | < 3.2.9 (Patch 9) |
Original advisory text
Softaculous Virtualizor OS Command Injection via Billing Module Handler
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.
References
- https://www.virtualizor.com/blog/virtualizor-3-2-9-launched-release-candidate-pa... release-notes patch
- https://www.virtualizor.com/blog/virtualizor-3-3-0/ release-notes patch
- https://www.vulncheck.com/advisories/softaculous-virtualizor-os-command-injectio... third-party-advisory
- https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rce technical-description exploit
Severity
9.3
Critical
CVSS 3.1: 9.8 (MITRE)
Exploitation
EPSS 3%
Type
CWE-78OS Command Injection
Timeline
Published22 Sep 2026
Updated24 Sep 2026
First seen22 Sep 2026
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