CVE-2026-97838: Role: DNS Server Information Disclosure Vulnerability
Out-of-bounds read in DNS Server allows an authorized attacker to disclose information over a network.
Other sources
Role: DNS Server 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 10.0.26100.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
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Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
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 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running an affected Microsoft Windows version are exposed when they are operating the DNS Server role. The affected products listed are Windows 10, Windows 11, and Windows Server 2016, 2019, 2022, and 2025.
What does an attacker need to exploit it?
The attacker needs authorization on the affected DNS Server and network access to it. No user interaction is required.
What is the impact of successful exploitation?
Successful exploitation can disclose information from the affected DNS Server. The provided severity data indicates high confidentiality impact, with no integrity or availability impact.