CVE-2026-58626: CWE-416: Use After Free in Microsoft Windows 10 Version 21H2
Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58626) involves a use-after-free condition in Windows Remote Desktop Services on Windows 10 Version 21H2 (build 10.0.19044.0). Exploitation requires an attacker with authorized access and allows remote code execution. The vulnerability is classified under CWE-416 (Use After Free). Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation can lead to remote code execution with high impact on confidentiality, integrity, and availability. An attacker with authorized network access to Remote Desktop Services could execute arbitrary code, potentially leading to full system compromise.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58626 to remediate this vulnerability.
CVE-2026-58626: CWE-416: Use After Free in Microsoft Windows 10 Version 21H2
Description
Use after free in Windows Remote Desktop Services allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58626) involves a use-after-free condition in Windows Remote Desktop Services on Windows 10 Version 21H2 (build 10.0.19044.0). Exploitation requires an attacker with authorized access and allows remote code execution. The vulnerability is classified under CWE-416 (Use After Free). Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation can lead to remote code execution with high impact on confidentiality, integrity, and availability. An attacker with authorized network access to Remote Desktop Services could execute arbitrary code, potentially leading to full system compromise.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58626 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T21:14:44.616Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58626","vendor":"Microsoft"}]
Threat ID: 6a5676c468715ace43f0b2e1
Added to database: 07/14/2026, 17:49:56 UTC
Last enriched: 07/14/2026, 18:03:43 UTC
Last updated: 07/14/2026, 20:03:48 UTC
Views: 3
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