March 4, 2025 · Applied Cybernetics Group
CVE-2025-22225 — VMware ESXi
known ransomware use
VMware ESXi Arbitrary Write Vulnerability
- Added to KEV
2025-03-04- Federal due date
2025-03-25- Vendor
- VMware
- Product
- ESXi
- EPSS
- 93.1th percentile (score 0.098, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-22225
CISA short description
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.
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.