CVE-2026-42913: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Remote Desktop client for Windows Desktop
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42913) affects Microsoft Remote Desktop client for Windows Desktop version 1.2.0.0. It is a heap-based buffer overflow resulting from a race condition due to improper synchronization of shared resources (CWE-362). The flaw allows remote attackers to execute arbitrary code without privileges, though user interaction is required. The CVSS 3.1 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could lead to remote code execution by an unauthorized attacker, compromising the confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but user interaction is necessary. This could allow full control over the affected Windows Desktop system running the vulnerable Remote Desktop client.
Mitigation Recommendations
An official patch is available from Microsoft to fix this vulnerability. Users and administrators should apply the update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42913 to remediate this issue. No additional mitigation steps are indicated beyond applying the official fix.
CVE-2026-42913: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Remote Desktop client for Windows Desktop
Description
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42913) affects Microsoft Remote Desktop client for Windows Desktop version 1.2.0.0. It is a heap-based buffer overflow resulting from a race condition due to improper synchronization of shared resources (CWE-362). The flaw allows remote attackers to execute arbitrary code without privileges, though user interaction is required. The CVSS 3.1 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could lead to remote code execution by an unauthorized attacker, compromising the confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but user interaction is necessary. This could allow full control over the affected Windows Desktop system running the vulnerable Remote Desktop client.
Mitigation Recommendations
An official patch is available from Microsoft to fix this vulnerability. Users and administrators should apply the update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42913 to remediate this issue. No additional mitigation steps are indicated beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T22:35:54.969Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42913","vendor":"Microsoft"}]
Threat ID: 6a284cc48dd33fbd85664817
Added to database: 6/9/2026, 5:26:28 PM
Last enriched: 6/9/2026, 11:11:05 PM
Last updated: 6/10/2026, 6:08:45 AM
Views: 5
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