CVE-2026-20923: 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 involves a use-after-free condition in Windows Management Services on Windows 10 Version 1809 (build 10.0.17763.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. The attack vector requires local access with high attack complexity and low privileges, without user interaction. Microsoft has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges on the affected system, potentially leading to full system compromise. Confidentiality, integrity, and availability impacts are all rated high according to the CVSS vector. No known exploits are currently reported in the wild.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1809 (build 10.0.17763.0) to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-20923: 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 involves a use-after-free condition in Windows Management Services on Windows 10 Version 1809 (build 10.0.17763.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. The attack vector requires local access with high attack complexity and low privileges, without user interaction. Microsoft has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges on the affected system, potentially leading to full system compromise. Confidentiality, integrity, and availability impacts are all rated high according to the CVSS vector. No known exploits are currently reported in the wild.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1809 (build 10.0.17763.0) to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.335Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae3a60475309f9ae1c9
Added to database: 1/13/2026, 6:11:47 PM
Last enriched: 4/3/2026, 12:49:21 PM
Last updated: 5/10/2026, 10:18:07 AM
Views: 84
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