CVE-2026-62878

CRITICAL9.8Memory safety

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Description

Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.

CVSS breakdown

CVSS 3.1

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Unchanged

Changed

Affected products

microsoft / windows_10_160710.0.14393.9418
microsoft / windows_10_160710.0.14393.9418
microsoft / windows_10_180910.0.17763.9121
microsoft / windows_10_180910.0.17763.9121
microsoft / Windows 10 Version 160710.0.14393.0 – 10.0.14393.9418
microsoft / Windows 10 Version 180910.0.17763.0 – 10.0.17763.9121
microsoft / Windows 10 Version 180910.0.17763.0 – 10.0.17763.9115
microsoft / Windows Server 2012
microsoft / Windows Server 2012r2 – r2
microsoft / Windows Server 20126.2.9200.0 – 6.2.9200.26279
microsoft / Windows Server 20126.2.9200.0 – 6.2.9200.26280
microsoft / Windows Server 2012 R26.3.9600.0 – 6.3.9600.23338
microsoft / Windows Server 2012 R26.3.9600.0 – 6.3.9600.23337
microsoft / Windows Server 2012 R2 (Server Core installation)6.3.9600.0 – 6.3.9600.23338
microsoft / Windows Server 2012 R2 (Server Core installation)6.3.9600.0 – 6.3.9600.23337
microsoft / Windows Server 2012 (Server Core installation)6.2.9200.0 – 6.2.9200.26279
microsoft / Windows Server 2012 (Server Core installation)6.2.9200.0 – 6.2.9200.26280
microsoft / Windows Server 201610.0.14393.0 – 10.0.14393.9418
microsoft / Windows Server 201610.0.14393.9418
microsoft / Windows Server 2016 (Server Core installation)10.0.14393.0 – 10.0.14393.9418
microsoft / Windows Server 201910.0.17763.9121
microsoft / Windows Server 201910.0.17763.0 – 10.0.17763.9121
microsoft / Windows Server 201910.0.17763.0 – 10.0.17763.9115
microsoft / Windows Server 2019 (Server Core installation)10.0.17763.0 – 10.0.17763.9115
microsoft / Windows Server 2019 (Server Core installation)10.0.17763.0 – 10.0.17763.9121
microsoft / Windows Server 202210.0.20348.0 – 10.0.20348.5499
microsoft / Windows Server 202210.0.20348.5440
microsoft / Windows Server 202510.0.26100.33222
microsoft / Windows Server 202510.0.26100.0 – 10.0.26100.33296
microsoft / Windows Server 2025 (Server Core installation)10.0.26100.0 – 10.0.26100.33296

References

VENDOR_ADVISORYhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62878

Updated 8m ago · 8 sources