CVE-2026-83723: Windows Event Logging Service Information Disclosure Vulnerability
Use of uninitialized resource in Windows Event Logging Service allows an authorized attacker to disclose information locally.
Other sources
Windows Event Logging Service Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The attacker must already be authorized on the affected system and have local access. Exploitation does not require user interaction, and the attack complexity is rated low.
What is the expected impact if exploitation succeeds?
Successful exploitation can disclose information from the affected system. The supplied severity vector indicates high confidentiality impact, with no integrity or availability impact.
Which systems are identified as affected?
The affected software list includes Microsoft Windows 10 and 11, plus Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025. The provided data does not identify specific affected build numbers or update levels.