Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.
Details
What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Security updates
10.0.17763.8511 — https://support.microsoft.com/help/5078752
10.0.20348.4893 — https://support.microsoft.com/help/5078766
10.0.20348.4830 — https://support.microsoft.com/help/5078737
10.0.19044.7058 — https://support.microsoft.com/help/5078885
10.0.26100.32522 — https://support.microsoft.com/help/5078740
10.0.26100.32463 — https://support.microsoft.com/help/5078736
10.0.26200.8037 — https://support.microsoft.com/help/5079473
10.0.26200.7979 — https://support.microsoft.com/help/5079420
10.0.22631.6783 — https://support.microsoft.com/help/5078883
10.0.25398.2207 — https://support.microsoft.com/help/5078734
10.0.14393.8957 — https://support.microsoft.com/help/5078938
6.2.9200.25973 — https://support.microsoft.com/help/5078775
6.3.9600.23074 — https://support.microsoft.com/help/5078774
10.0.28000.1719 — https://support.microsoft.com/help/5079466
Vulnerabilities 1
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High 7.8CVE-2026-24291 Public exploit
Windows Accessibility Infrastructure (ATBroker.exe) Elevation of Privilege Vulnerability
Incorrect permission assignment for critical resource in Windows Accessibility Infrastructure (ATBroker.exe) allows an authorized attacker to elevate privileges locally.
Revision history
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#1
Information published.
References
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CVE-2026-24291 Windows Accessibility Infrastructure (ATBroker.exe) Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24291
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss