CVE-2026-42984: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
CVE-2026-42984 is a use-after-free vulnerability (CWE-416) in the Windows Kernel component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). The vulnerability permits an authorized local attacker to elevate privileges by exploiting improper memory handling in the kernel. The CVSS v3.1 base score is 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows a local attacker with authorized access to elevate their privileges, potentially gaining higher-level system rights. This could lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42984 to remediate this issue.
CVE-2026-42984: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42984 is a use-after-free vulnerability (CWE-416) in the Windows Kernel component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). The vulnerability permits an authorized local attacker to elevate privileges by exploiting improper memory handling in the kernel. The CVSS v3.1 base score is 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows a local attacker with authorized access to elevate their privileges, potentially gaining higher-level system rights. This could lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42984 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T23:43:50.745Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42984","vendor":"Microsoft"}]
Threat ID: 6a284ccb8dd33fbd85664951
Added to database: 06/09/2026, 17:26:35 UTC
Last enriched: 07/29/2026, 21:50:11 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 60
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