Windows Remote Desktop
CVE-2025-29966 — Remote Desktop Client Remote Code Execution Vulnerability
Executive Summary
Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network.
Overview
8.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 7.7
EPSS Score
0.01118
probability of exploitation in the next 30 days
0.61845 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
35 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Remote Desktop client for Windows Desktop | Release Notes (Security Update) |
Critical | Remote Code Execution | Maybe |
| 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 App Client for Windows Desktop | Release Notes (Security Update) |
Critical | Remote Code Execution | Maybe |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 5058430 (Monthly Rollup) 5058454 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 5058430 (Monthly Rollup) 5058454 (Security Only) |
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) |
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
13 patches
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Maybe |
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 |
5058430 (Monthly Rollup) 5058454 |
Monthly Rollup | Yes |
5058451 |
Monthly Rollup | Yes |
5058403 |
Monthly Rollup | Yes |
5058385 (Security Update) 5058500 |
Security Update | Yes |
5058385 |
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
Nicholas Vadasz
References
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