CVE-2026-69597: CWE-416: Use After Free in Microsoft Windows 11 version 23H2
Description
CVE-2026-69597 is a use-after-free vulnerability in the Windows HTTP.sys component affecting Windows 11 version 23H2. This flaw allows an authorized attacker to elevate privileges over a network. The vulnerability has a high severity rating with a CVSS score of 7.1. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.1high
Affected software
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
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-2026-69597) involves a use-after-free condition in the Windows HTTP.sys driver on Windows 11 version 23H2. Exploitation requires an authorized attacker to interact over the network, potentially leading to privilege escalation. The flaw is tracked under CWE-416. Microsoft has published an official fix for affected versions.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges remotely via network access, potentially gaining higher system privileges than intended. This can lead to full system compromise depending on the privileges escalated.
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-2026-69597 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:18:49.124Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69597","vendor":"Microsoft"}]
Threat ID: 6aa04515acd9273b49fa9696
Added to database: 09/08/2026, 17:25:41 UTC
Last enriched: 10/16/2026, 21:23:41 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 33
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