CVE-2026-88125: Role: DNS Server Denial of Service Vulnerability
Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.
Other sources
Role: DNS Server Denial of Service 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 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26434Patch KB5126835
Event History
Frequently Asked Questions
Which systems are exposed to this issue?
The affected products listed are Microsoft Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025 when operating in the DNS Server role.
What does an attacker need to exploit this vulnerability?
The attacker must be authorized and able to reach the DNS Server over the network. No user interaction is required.
What is the expected impact of successful exploitation?
Successful exploitation can deny service on the DNS Server. The supplied metrics indicate no confidentiality or integrity impact.