TRIADA
Back to live map

CVE-2025-22225

KEVRansomware UseVMware ESXi Arbitrary Write Vulnerability
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.

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 3.1 vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
PublishedMar 4, 2025
Last modifiedAug 4, 2026
Added to KEVMar 4, 2025
Remediation dueMar 25, 2025
References
0 recent articles mention this CVE
    81
    Risk assessment · Critical

    Actively exploited and used by ransomware crews. Patch immediately.

    Exploitation
    Confirmed in the wild (CISA KEV)
    Federal remediation deadline
    Overdue by 581 days
    Ransomware
    Used in known ransomware campaigns
    CVSS
    8.2 HIGH
    EPSS (30-day exploit probability)
    1.0% · top 37% of all CVEs
    Weakness
    CWE-787
    Recommended actions
    1. 1.Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
    2. 2.Treat as emergency change: patch or isolate internet-facing instances first.
    3. 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
    4. 4.Verify offline/immutable backups and segment the affected systems. This flaw is used for ransomware initial access.

    Assessment is derived automatically from the live signals above; verify against your own asset inventory.