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?
An attacker who successfully exploited this vulnerability could potentially read portions of heap memory.
Security updates
10.0.28000.1836 — https://support.microsoft.com/help/5083768
10.0.17763.8644 — https://support.microsoft.com/help/5082123
10.0.20348.5020 — https://support.microsoft.com/help/5082142
10.0.19044.7184 — https://support.microsoft.com/help/5082200
10.0.26100.32690 — https://support.microsoft.com/help/5082063
10.0.26200.8246 — https://support.microsoft.com/help/5083769
10.0.22631.6936 — https://support.microsoft.com/help/5082052
10.0.25398.2274 — https://support.microsoft.com/help/5082060
10.0.14393.9060 — https://support.microsoft.com/help/5082198
Vulnerabilities 1
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Medium 6.5
Microsoft Local Security Authority Subsystem Service Information Disclosure Vulnerability
Microsoft Local Security Authority Subsystem Service Information Disclosure Vulnerability
Revision history
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#1
Information published.
References
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CVE-2026-26155 Microsoft Local Security Authority Subsystem Service Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26155
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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