CVE-2026-20865: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20865) involves a use-after-free condition in Windows Management Services on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker could exploit this flaw to elevate privileges, potentially gaining higher system rights than intended. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. The vendor has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise or unauthorized access to sensitive resources. The vulnerability affects confidentiality, integrity, and availability of the system. There are no reports of active exploitation in the wild.
Mitigation Recommendations
A patch is available from Microsoft to address this vulnerability. It is recommended to apply the official security update for Windows 10 Version 1809 as soon as possible to mitigate the risk. Since this is not a cloud service, remediation depends on applying the patch on affected systems.
CVE-2026-20865: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20865) involves a use-after-free condition in Windows Management Services on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker could exploit this flaw to elevate privileges, potentially gaining higher system rights than intended. The CVSS v3.1 base score is 7.8, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. The vendor has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise or unauthorized access to sensitive resources. The vulnerability affects confidentiality, integrity, and availability of the system. There are no reports of active exploitation in the wild.
Mitigation Recommendations
A patch is available from Microsoft to address this vulnerability. It is recommended to apply the official security update for Windows 10 Version 1809 as soon as possible to mitigate the risk. Since this is not a cloud service, remediation depends on applying the patch on affected systems.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.381Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae0a60475309f9ae133
Added to database: 1/13/2026, 6:11:44 PM
Last enriched: 4/3/2026, 12:47:10 PM
Last updated: 5/10/2026, 4:18:20 PM
Views: 112
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