Vulnerability intelligence
CVE-2025-22224
VMware ESXi and Workstation TOCTOU Race Condition Vulnerability
VMware ESXi and Workstation
VMware ESXi, and Workstation contain a TOCTOU (Time-of-Check Time-of-Use) vulnerability that leads to an out-of-bounds write. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host.
CVSS Score
9.3
Critical
EPSS — Exploit Probability
1.6%
Riskier than 75% of all CVEs · checked 2026-10-12
Exploitation
Confirmed in the wild
KEV since 2025-03-04
Remediation
Unconfirmed
Federal deadline 2025-03-25
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Deadline for federal agencies: 2025-03-25.
1 article across 1 outlet · first covered Feb 4, 2026 · latest Feb 4, 2026
Coverage timeline
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CVE-2025-22225 in VMware ESXi now used in active ransomware attackssecurityaffairs.com · Feb 4, 2026