Process-memory disclosure via uninitialized VMCI memory
Published Jul 15, 2025 · Updated Jul 15, 2025
Information disclosure in VMware vSockets allows local users to read process memory from an administratively controlled guest VM. VMCI exposes memory that was not initialized before vSockets accesses and returns it across the guest-host communication boundary. Exploitation requires local administrative privileges in the guest; the reported consequence is confidentiality loss without integrity or availability impact.
Summary
What happened
Information disclosure in VMware vSockets allows local users to read process memory from an administratively controlled guest VM. VMCI exposes memory that was not initialized before vSockets accesses and returns it across the guest-host communication boundary. Exploitation requires local administrative privileges in the guest; the reported consequence is confidentiality loss without integrity or availability impact.
The record
- CVE
- CVE-2025-41239
- Published
- Jul 15, 2025
- Updated
- Jul 15, 2025
- Vendor
- VMware
- Product
- VMware Tools
- Classifications
- CWE-908, T1005
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Jul 15, 2025CVE publishedPublication date reported by the CVE source.
- Jul 15, 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=12.x.x, 11.x.x, <12.5.3
- Affected versionversion=13.x.x <13.0.1.0
What conditions does exploitation require?
What is affected?
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.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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