Vulnerability intelligence
CVE-2025-22225
VMware ESXi Arbitrary Write Vulnerability
VMware ESXi
VMware ESXi contains an arbitrary write vulnerability. A malicious actor with privileges within the VMX process may trigger an arbitrary kernel write leading to an escape of the sandbox.
CVSS Score
8.2
High
EPSS — Exploit Probability
1.0%
Riskier than 62% of all CVEs · checked 2026-10-11
Exploitation
Confirmed in the wild
Used in ransomware campaigns
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