CVE-2026-26132: CWE-416: Use After Free in Microsoft Windows 10 Version 21H2
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-26132) involves a use-after-free condition in the Windows Kernel of Windows 10 Version 21H2 (build 10.0.19044.0). Exploiting this flaw could allow an authorized local attacker to elevate their privileges on the affected system. The vulnerability has been assigned a CVSS v3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the attacker's goals and existing permissions. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26132 for detailed patch information and installation instructions.
CVE-2026-26132: CWE-416: Use After Free in Microsoft Windows 10 Version 21H2
Description
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26132) involves a use-after-free condition in the Windows Kernel of Windows 10 Version 21H2 (build 10.0.19044.0). Exploiting this flaw could allow an authorized local attacker to elevate their privileges on the affected system. The vulnerability has been assigned a CVSS v3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the attacker's goals and existing permissions. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26132 for detailed patch information and installation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T16:24:51.133Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26132","vendor":"Microsoft"}]
Threat ID: 69b05632ea502d3aa87d6b5c
Added to database: 03/10/2026, 17:34:42 UTC
Last enriched: 06/19/2026, 20:32:09 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 233
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.