Hackers Hid Vasilek Backdoor in VMware Tools

VMware Tools

Hackers hid Vasilek backdoor in VMware tools during 2-year Russian healthcare intrusion.

Do this now

Check VMware Tools installations for the Vasilek backdoor and investigate any hits.

First seen: 21 Oct 2026
Last update: 21 Oct 2026, 06:05 UTC
Source: news
On the menu as: VMware

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Hackers Hid Vasilek Backdoor in VMware Tools
Severity: unknown. Patch status: fix status unknown.
Affected: VMware Tools

Hackers hid Vasilek backdoor in VMware tools during 2-year Russian healthcare intrusion.

## Steps
1. This touches infrastructure (vmware). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.
2. There is no fix yet. Until one ships: Hackers hid Vasilek backdoor in VMware tools during 2-year Russian healthcare intrusion.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://thehackernews.com/2026/10/hackers-hid-vasilek-backdoor-in-vmware.html
https://pwned.coffee/i/hackers-hid-vasilek-backdoor-in-vmware-tools

Receipt

Exploitation: No known exploitation
Score: No CVSS published yet: severity unknown.
Last checked: 24 Oct 2026, 18:17 UTC

Sources: KEV – CVE record – Vendor –

Sources

feeds.feedburner.com: Hackers Hid Vasilek Backdoor in VMware Tools During 2-Year Russian Healthcare Intrusion

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