CVE-2026-42829: CWE-284: Improper Access Control in Microsoft Windows 11 Version 24H2
CVE-2026-42829 is a high-severity vulnerability in Microsoft Windows 11 Version 24H2 involving improper access control in Windows Administrator Protection. This flaw allows an authorized local attacker with limited privileges to bypass a security feature, potentially leading to full confidentiality, integrity, and availability compromise. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
CVE-2026-42829 is an improper access control vulnerability (CWE-284) affecting Windows Administrator Protection in Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). It enables an authorized attacker with local access and low privileges to bypass a security feature, resulting in high impact on confidentiality, integrity, and availability. The vulnerability has a CVSS 3.1 base score of 7.8, indicating high severity. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker with low privileges can bypass Windows Administrator Protection security controls, potentially gaining unauthorized access or control over system functions. The impact includes full compromise of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42829 to remediate this issue.
CVE-2026-42829: CWE-284: Improper Access Control in Microsoft Windows 11 Version 24H2
Description
CVE-2026-42829 is a high-severity vulnerability in Microsoft Windows 11 Version 24H2 involving improper access control in Windows Administrator Protection. This flaw allows an authorized local attacker with limited privileges to bypass a security feature, potentially leading to full confidentiality, integrity, and availability compromise. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42829 is an improper access control vulnerability (CWE-284) affecting Windows Administrator Protection in Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). It enables an authorized attacker with local access and low privileges to bypass a security feature, resulting in high impact on confidentiality, integrity, and availability. The vulnerability has a CVSS 3.1 base score of 7.8, indicating high severity. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker with low privileges can bypass Windows Administrator Protection security controls, potentially gaining unauthorized access or control over system functions. The impact includes full compromise of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42829 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T14:51:12.703Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42829","vendor":"Microsoft"}]
Threat ID: 6a284cbb8dd33fbd85664548
Added to database: 6/9/2026, 5:26:19 PM
Last enriched: 6/9/2026, 11:12:42 PM
Last updated: 6/10/2026, 5:03:49 AM
Views: 4
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.