CVE-2026-88180: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1809
Description
CVE-2026-88180 is a high-severity vulnerability in the Windows DWM Core Library of Microsoft Windows 10 Version 1809 and related builds. It involves an out-of-bounds read that allows an authorized local attacker to elevate privileges. The vulnerability affects multiple Windows 10 versions prior to specific patched builds. An official fix is available from Microsoft.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 Version 26H2
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-88180) is an out-of-bounds read flaw in the Windows Desktop Window Manager (DWM) Core Library. It allows a local attacker with authorized access to elevate their privileges on affected Windows 10 systems. The CVSS 3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. The vulnerability affects multiple Windows 10 versions including builds from 17763 up to but excluding patched builds like 17763.9376 and others. Microsoft has released an official fix for this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher-level access to the affected system. The vulnerability impacts confidentiality, integrity, and availability as indicated by the CVSS vector. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88180 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-09T21:59:30.884Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88180","vendor":"Microsoft"}]
Threat ID: 6ace85672cdf04f656a002f9
Added to database: 10/13/2026, 19:24:23 UTC
Last enriched: 10/14/2026, 01:18:41 UTC
Last updated: 10/14/2026, 01:18:41 UTC
Views: 2
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