Windows Virtual Machine Bus
CVE-2025-29833 — Microsoft Virtual Machine Bus (VMBus) Remote Code Execution Vulnerability
Executive Summary
Time-of-check time-of-use (toctou) race condition in Windows Virtual Machine Bus allows an unauthorized attacker to execute code locally.
Overview
7.7
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Changed
Temporal Score: 6.7
EPSS Score
0.00334
probability of exploitation in the next 30 days
0.2503 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
31 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 5058387 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 for x64-based Systems | 5058387 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 5058383 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 5058383 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 5058392 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 5058392 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for 32-bit Systems | 5058379 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for ARM64-based Systems | 5058379 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for x64-based Systems | 5058379 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for 32-bit Systems | 5058379 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for ARM64-based Systems | 5058379 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for x64-based Systems | 5058379 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 22H2 for ARM64-based Systems | 5058405 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 22H2 for x64-based Systems | 5058405 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for ARM64-based Systems | 5058405 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for x64-based Systems | 5058405 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for ARM64-based Systems | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for x64-based Systems | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 | 5058451 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 (Server Core installation) | 5058451 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 | 5058403 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 (Server Core installation) | 5058403 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 | 5058383 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 5058383 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 | 5058392 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 5058392 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022 | 5058385 (Security Update) 5058500 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022 (Server Core installation) | 5058385 (Security Update) 5058500 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 5058384 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2025 | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows Server 2025 (Server Core installation) | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
Patches
10 patches
| Article | Type | Restart |
|---|---|---|
5058387 |
Security Update | Yes |
5058383 |
Security Update | Yes |
5058392 |
Security Update | Yes |
5058379 |
Security Update | Yes |
5058405 |
Security Update | Yes |
5058411 (Security Update) 5058497 |
Security Update | Yes |
5058451 |
Monthly Rollup | Yes |
5058403 |
Monthly Rollup | Yes |
5058385 (Security Update) 5058500 |
Security Update | Yes |
5058384 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Chief Banana
References
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