CVE-2026-35421: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows GDI allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability is a heap-based buffer overflow in the Windows Graphics Device Interface (GDI) on Windows 10 Version 1607 (build 10.0.14393.0). It enables an unauthorized local attacker to execute arbitrary code, potentially leading to full system compromise. The vulnerability is tracked as CVE-2026-35421 and is classified under CWE-122. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows local attackers to execute arbitrary code on affected systems, resulting in complete compromise of confidentiality, integrity, and availability of the system. This can lead to unauthorized system control and potential disruption of services.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft security advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35421 to protect affected systems. No additional mitigation steps are specified by the vendor.
CVE-2026-35421: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows GDI allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-based buffer overflow in the Windows Graphics Device Interface (GDI) on Windows 10 Version 1607 (build 10.0.14393.0). It enables an unauthorized local attacker to execute arbitrary code, potentially leading to full system compromise. The vulnerability is tracked as CVE-2026-35421 and is classified under CWE-122. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows local attackers to execute arbitrary code on affected systems, resulting in complete compromise of confidentiality, integrity, and availability of the system. This can lead to unauthorized system control and potential disruption of services.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft security advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35421 to protect affected systems. No additional mitigation steps are specified by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-02T19:21:11.804Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35421","vendor":"Microsoft"}]
Threat ID: 6a036547cbff5d861008c645
Added to database: 05/12/2026, 17:37:11 UTC
Last enriched: 06/19/2026, 17:34:46 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 57
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