CVE-2026-73017: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1809
Description
Heap-based buffer overflow in Windows Graphics Kernel allows an authorized attacker to execute code locally.
CVSS v3.1
Score 7.5high
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 26H1
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, identified as CVE-2026-73017 and classified under CWE-122, is a heap-based buffer overflow in the Windows Graphics Kernel component of Microsoft Windows 10 Version 1809 and several subsequent builds. The flaw permits an attacker with authorized local access and high privileges to execute arbitrary code, impacting confidentiality, integrity, and availability. The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity. Microsoft has released an official fix addressing this issue.
Potential Impact
Successful exploitation allows an attacker with high privileges to execute arbitrary code locally, potentially leading to complete system compromise including full control over confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73017.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-10T18:43:43.200Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73017","vendor":"Microsoft"}]
Threat ID: 6aa04552acd9273b49fa9e40
Added to database: 09/08/2026, 17:26:42 UTC
Last enriched: 10/14/2026, 21:54:34 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 27
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