Remote Desktop Client
CVE-2025-27487 — Remote Desktop Client Remote Code Execution Vulnerability
Executive Summary
Heap-based buffer overflow in Remote Desktop Client allows an authorized attacker to execute code over a network.
Overview
8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.0
EPSS Score
0.01258
probability of exploitation in the next 30 days
0.65691 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
33 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Remote Desktop client for Windows Desktop | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Windows 10 for 32-bit Systems | 5055547 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 for x64-based Systems | 5055547 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 5055521 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 5055521 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 5055519 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 5055519 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for 32-bit Systems | 5055518 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for ARM64-based Systems | 5055518 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for x64-based Systems | 5055518 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for 32-bit Systems | 5055518 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for ARM64-based Systems | 5055518 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for x64-based Systems | 5055518 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 22H2 for ARM64-based Systems | 5055528 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 22H2 for x64-based Systems | 5055528 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for ARM64-based Systems | 5055528 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for x64-based Systems | 5055528 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for ARM64-based Systems | 5055523 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for x64-based Systems | 5055523 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows App Client for Windows Desktop | Release Notes (Security Update) |
Important | Remote Code Execution | Maybe |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 5055561 (Monthly Rollup) 5055570 (Security Only) Important Remote Code Execution 5053620 Base: 8.0 Temporal: 7.0 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.27670 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5055561 (Monthly Rollup) 5055570 (Security Only) Important Remote Code Execution 5053620 Base: 8.0 Temporal: 7.0 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.27670 Yes None Windows Server 2012 | 5055581 (Monthly Rollup) |
Important | Remote Code Execution | Yes |
| Windows Server 2012 (Server Core installation) | 5055581 (Monthly Rollup) |
Important | Remote Code Execution | Yes |
| Windows Server 2012 R2 | 5055557 (Monthly Rollup) |
Important | Remote Code Execution | Yes |
| Windows Server 2012 R2 (Server Core installation) | 5055557 (Monthly Rollup) |
Important | Remote Code Execution | Yes |
| Windows Server 2016 | 5055521 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 5055521 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2019 | 5055519 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 5055519 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2022 | 5055526 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2022 (Server Core installation) | 5055526 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 5055527 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2025 | 5055523 (Security Update) |
Important | Remote Code Execution | Yes |
| Windows Server 2025 (Server Core installation) | 5055523 (Security Update) |
Important | Remote Code Execution | Yes |
Patches
11 patches
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Maybe |
5055547 |
Security Update | Yes |
5055521 |
Security Update | Yes |
5055519 |
Security Update | Yes |
5055518 |
Security Update | Yes |
5055528 |
Security Update | Yes |
5055523 |
Security Update | Yes |
5055581 |
Monthly Rollup | Yes |
5055557 |
Monthly Rollup | Yes |
5055526 |
Security Update | Yes |
5055527 |
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
Josh Watson with Microsoft, Nicholas Vadasz with Microsoft, Philemon Orphee Favrod with Microsoft
References
On This Page