CVE-2026-50340: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Description
Use after free in Windows Runtime allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.5high
Affected software
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50340) involves a use-after-free condition in the Windows Runtime component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). Exploitation requires an authorized attacker to connect over a network and can lead to elevation of privileges, compromising confidentiality, integrity, and availability. The vulnerability has been assigned a CVSS 3.1 base score of 8.5, indicating high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges remotely over a network, potentially leading to full system compromise including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided security update as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50340 for update details.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:15:10.952Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50340","vendor":"Microsoft"}]
Threat ID: 6a56769168715ace43f08c89
Added to database: 07/14/2026, 17:49:05 UTC
Last enriched: 08/13/2026, 14:35:57 UTC
Last updated: 10/13/2026, 18:57:37 UTC
Views: 92
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