VMware ESXi and Workstation: ESXi and Workstation TOCTOU Race Condition Vulnerability
VMware ESXi and Workstation
VMware ESXi and Workstation contain a time-of-check time-of-use (TOCTOU) race condition vulnerability that leads to an out-of-bounds write. Successful exploitation enables an attacker with local administrative privileges on a virtual machine to execute code as the virtual machine's VMX process running on the host. Added to CISA KEV on 2025-03-04.
Why this severity: CVSS 9.3 (CNA, v3.1); actively exploited (CISA KEV)
- Started
- Mar 4, 2025
- Closed
- Mar 4, 2025
Affected
- See vendor advisory / CISA notes (versions not always listed in KEV feed)
Fixed in
- See vendor advisory linked in sources
Timeline1
CISA added CVE-2025-22224 to the KEV catalog (due 2025-03-25).
Advisories3
Notes & caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).
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