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CVE-2025-22226: VMware ESXi, Workstation, and Fusion Information Disclosure Vulnerability

criticalknown exploitedCVE-2025-22226
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation 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

vendor: VMwareproduct: ESXi, Workstation, and FusionInformation disclosure
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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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-03-04
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-22226

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-22226coverage & exploitation statusNVD · CVE.org

Recent advisories for VMware ESXi

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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