CVE-2025-22224 is a time-of-check time-of-use (TOCTOU) vulnerability in the Virtual Machine Communication Interface (VMCI) component of VMware ESXi and VMware Workstation. The race condition leads to an out-of-bounds write. An attacker holding local administrative privileges within a guest virtual machine can exploit the flaw to execute code in the virtual machine's VMX process on the host.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
42 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A TOCTOU race condition in VMware products mentioned as historical background on prior zero-days.
A critical vulnerability affecting VMware ESXi and VMware Workstation (mentioned as a prior VMware zero-day disclosure).
An actively exploited VMware vulnerability (TOCTOU leading to out-of-bounds write) affecting ESXi/Workstation/Fusion.
A VMware ESXi vulnerability reportedly chained with CVE-2025-22225 in observed attacks.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.