Summary
Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What type of information could be disclosed by this vulnerability?
Successful exploitation could allow an attacker to infer limited information from memory in a privileged process by observing comparison results. It does not provide unrestricted read access to that process's memory.
Security updates
10.0.17763.9487 — https://support.microsoft.com/help/5131085
10.0.26100.33822 — https://support.microsoft.com/help/5131080
10.0.26100.33730 — https://support.microsoft.com/help/5131077
10.0.26300.9974 — https://support.microsoft.com/help/5132061
10.0.26300.9911 — https://support.microsoft.com/help/5132043
10.0.20348.5870 — https://support.microsoft.com/help/5131090
10.0.19044.7846 — https://support.microsoft.com/help/5131096
10.0.22631.7711 — https://support.microsoft.com/help/5131087
10.0.28000.3501 — https://support.microsoft.com/help/5132059
10.0.14393.9688 — https://support.microsoft.com/help/5131291
Vulnerabilities 1
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Medium 5.5
Windows System Events Broker Information Disclosure Vulnerability
Use after free in Windows System Events Broker allows an authorized attacker to disclose information locally.
Revision history
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#1
Information published.
References
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CVE-2026-105530 Windows System Events Broker Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105530
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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