CVE-2026-84000: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Windows 10 Version 1607
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 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
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-2026-84000) involves a heap-based buffer overflow in the Microsoft Graphics Component on Windows 10 Version 1607 and other specified versions. An authorized attacker with local access can exploit this flaw to execute arbitrary code. The vulnerability is tracked under CWE-122 and has a CVSS 3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. Multiple Windows 10 builds are affected, with patches available from Microsoft as official fixes.
Potential Impact
Successful exploitation allows an authorized local attacker to execute arbitrary code, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. The vulnerability affects multiple Windows 10 versions, exposing a broad user base to risk if unpatched.
Mitigation Recommendations
Microsoft has released official patches to remediate this vulnerability. Users and administrators should apply the latest security updates from Microsoft for the affected Windows 10 versions to mitigate this risk. Since an official fix is available, applying these updates is the recommended and effective mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-01T01:16:35.985Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84000","vendor":"Microsoft"}]
Threat ID: 6aa0457cacd9273b49fbdf7d
Added to database: 09/08/2026, 17:27:24 UTC
Last enriched: 10/14/2026, 22:14:30 UTC
Last updated: 10/23/2026, 15:10:15 UTC
Views: 48
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