CVE-2025-22226
Actively exploited. CVE-2025-22226 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-03-04) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability due to an out-of-bounds read in HGFS. Successful exploitation allows an attacker with administrative privileges to a virtual machine to leak memory from the vmx process.
CSIRTS triage
- What
- An information disclosure vulnerability allows an attacker to leak memory from the vmx process due to an out-of-bounds read.
- Who is affected
- Administrators of VMware ESXi, Workstation, and Fusion with access to a virtual machine.
- Urgency
- Immediate action is necessary due to active exploitation and critical severity.
- Action
- Update to the latest versions to resolve the vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 74% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2025-22226: VMware ESXi, Workstation, and Fusion Information Disclosure Vulnerabilitycisa-kev · 2025-03-04
External references
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[](https://www.csirts.com/cve/CVE-2025-22226)