Guest-to-host memory disclosure via UHCI controller
Published Mar 5, 2024 · Updated Aug 26, 2025
Information disclosure in VMware ESXi, Workstation, and Fusion allows local users to read vmx process memory through the UHCI USB controller. VMware has not published the UHCI operation that returns vmx memory to the guest. Exploitation requires administrative access inside a VM, and the reported consequence is host-process memory disclosure only.
Summary
What happened
Information disclosure in VMware ESXi, Workstation, and Fusion allows local users to read vmx process memory through the UHCI USB controller. VMware has not published the UHCI operation that returns vmx memory to the guest. Exploitation requires administrative access inside a VM, and the reported consequence is host-process memory disclosure only.
The record
- CVE
- CVE-2024-22255
- Published
- Mar 5, 2024
- Updated
- Aug 26, 2025
- Vendor
- VMware
- Product
- VMware Workstation
- Classifications
- CWE-770, T1005
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Mar 5, 2024CVE publishedPublication date reported by the CVE source.
- Aug 26, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=17.x <17.5.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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