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[ CVE-2025-22225 · Published 4 Mar 2025 ]

VMware ESXi Arbitrary Write Vulnerability

Exploited · CISA KEV CVSS 8.2 EPSS 1%No fix listed yet

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-03-04
  • Known to be used in ransomware campaigns

[ Description ]Official description

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.

CISA: VMware ESXi contains an arbitrary write vulnerability. Successful exploitation allows an attacker with privileges within the VMX process to trigger an arbitrary kernel write leading to an escape of the sandbox.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 25 Mar 2025): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References