8.8High

CVE-2026-109463Windows DNS Remote Code Execution Vulnerability

Microsoft Windows 10 Version 1607; Microsoft Windows 10 Version 1809; Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2 Published: 2026-11-10 21:15 (4 days ago)

Description

Deserialization of untrusted data in Windows DNS allows an unauthorized attacker to execute code over a network.

Weakness (CWE): CWE-502

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
microsoft	windows 10 1607	10.0.14393.0 – < 10.0.14393.9612
microsoft	windows 10 1809	10.0.17763.0 – < 10.0.17763.9376
microsoft	windows 10 21H2	10.0.19044.0 – < 10.0.19044.7807
microsoft	windows 10 22H2	10.0.19045.0 – < 10.0.19045.7807
Microsoft	Windows 10 Version 1607	10.0.14393.0 – < 10.0.14393.9612
Microsoft	Windows 10 Version 1809	10.0.17763.0 – < 10.0.17763.9376
Microsoft	Windows 10 Version 21H2	10.0.19044.0 – < 10.0.19044.7807
Microsoft	Windows 10 Version 22H2	10.0.19045.0 – < 10.0.19045.7807
microsoft	windows 11 23H2	10.0.22631.0 – < 10.0.22631.7652
microsoft	windows 11 24H2	10.0.26100.0 – < 10.0.26100.9711
microsoft	windows 11 25H2	10.0.26200.0 – < 10.0.26200.9711
microsoft	windows 11 26H1	10.0.28000.0 – < 10.0.28000.3231
Microsoft	Windows 11 version 23H2	10.0.22631.0 – < 10.0.22631.7652
Microsoft	Windows 11 Version 24H2	10.0.26100.0 – < 10.0.26100.9711
Microsoft	Windows 11 Version 25H2	10.0.26200.0 – < 10.0.26200.9711
Microsoft	Windows 11 version 26H1	10.0.28000.0 – < 10.0.28000.3231
Microsoft	Windows 11 Version 26H2	10.0.26300.0 – < 10.0.26300.9711
microsoft	windows 11 version 26h2 for arm64-based systems	10.0.26300.0 – < 10.0.26300.9711
Microsoft	Windows Server 2012	6.2.9200.0 – < 6.2.9200.26434
Microsoft	Windows Server 2012 R2	6.3.9600.0 – < 6.3.9600.23470
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 – < 6.3.9600.23470
Microsoft	Windows Server 2012 (Server Core installation)	6.2.9200.0 – < 6.2.9200.26434
Microsoft	Windows Server 2016	10.0.14393.0 – < 10.0.14393.9612
Microsoft	Windows Server 2016 (Server Core installation)	10.0.14393.0 – < 10.0.14393.9612
Microsoft	Windows Server 2019	10.0.17763.0 – < 10.0.17763.9376
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 – < 10.0.17763.9376
Microsoft	Windows Server 2022	10.0.20348.0 – < 10.0.20348.5761
Microsoft	Windows Server 2025	10.0.26100.0 – < 10.0.26100.33650
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 – < 10.0.26100.33650

References and patches

Windows DNS Remote Code Execution Vulnerability vendor-advisorypatch

CVSS score

8.8High

Source: microsoft · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

All scores (2)

cna	CVSS 3.1	8.8High
secure@microsoft.com	CVSS 3.1	8.8High

EPSS (chance of exploitation in 30 days)

1.11%

higher than 67% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: total

Timeline

ID reserved2026-10-12
Published2026-11-10 21:15
Reached IP-DB2026-11-10 23:04
Last updated2026-11-13 21:04

Assigned by (CNA): microsoft
NVD status: Awaiting Analysis

View at source: CVE.org · NVD

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