CVE-2026-42985 Details
Description
Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
A heap-based buffer overflow vulnerability has been identified in the Remote Desktop Client. This vulnerability allows an unauthorized attacker to execute code remotely over a network. The issue arises when a victim connects to a compromised Remote Desktop Server using the vulnerable client.
Users can download the security update for the Remote Desktop Client for Windows Desktop from the Microsoft Update Catalog. Security updates for various Windows versions and editions are also available through the Microsoft Update Catalog.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 10, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42985 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft remote desktop client | < 1.2.7214 |
CPE
Remediation
| |
| microsoft windows app | < 2.0.1193.0 |
CPE
Remediation
| |
| microsoft windows 10 1607 | < 10.0.14393.9234 |
CPE
Remediation
| |
| microsoft windows 10 1809 | < 10.0.17763.8880 |
CPE
Remediation
| |
| microsoft windows 10 21h2 | < 10.0.19044.7417 |
CPE
Remediation
| |
| microsoft windows 10 22h2 | < 10.0.19045.7417 |
CPE
Remediation
| |
| microsoft windows 11 23h2 | < 10.0.22631.7219 |
CPE
Remediation
| |
| microsoft windows 11 24h2 | < 10.0.26100.8655 |
CPE
Remediation
| |
| microsoft windows 11 25h2 | < 10.0.26200.8655 |
CPE
Remediation
| |
| microsoft windows 11 26h1 | < 10.0.28000.2269 |
CPE
Remediation
| |
| microsoft windows server 2012 | r2 |
CPE
Remediation
| |
| microsoft windows server 2016 | < 10.0.14393.9234 |
CPE
Remediation
| |
| microsoft windows server 2019 | < 10.0.17763.8880 |
CPE
Remediation
| |
| microsoft windows server 2022 | < 10.0.20348.5256 |
CPE
Remediation
| |
| microsoft windows server 2025 | < 10.0.26100.32995 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 9, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 15, 2026 | Initial Analysis | [email protected] |
| Jun 9, 2026 | New CVE Received | [email protected] |