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CVE-2026-62817

nvd nist
Published: Aug 11, 2026Modified: Sep 2, 2026

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8.8
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: secure@microsoft.com (Secondary)

Description

Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent network.

Affected (19)

Microsoft
10 products
Windows 10 1809
Windows 10 21h2
Windows 10 22h2
Windows 11 23h2
Windows 11 24h2
Windows 11 25h2
Windows 11 26h1
Windows Server 2019
Windows Server 2022
Windows Server 2025
Configuration A
19 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
Windows 10 1809
version < 10.0.17763.9121
Windows 10 1809
version < 10.0.17763.9121
Microsoft
Windows 10 21h2
version < 10.0.19044.7663
Windows 10 21h2
version < 10.0.19044.7663
Windows 10 21h2
version < 10.0.19044.7663
Microsoft
Windows 10 22h2
version < 10.0.19045.7663
Windows 10 22h2
version < 10.0.19045.7663
Windows 10 22h2
version < 10.0.19045.7663
Microsoft
Windows 11 23h2
version < 10.0.22631.7517
Windows 11 23h2
version < 10.0.22631.7517
Microsoft
Windows 11 24h2
version < 10.0.26100.9106
Windows 11 24h2
version < 10.0.26100.9106
Microsoft
Windows 11 25h2
version < 10.0.26200.9106
Windows 11 25h2
version < 10.0.26200.9106
Microsoft
Windows 11 26h1
version < 10.0.28000.2704
Windows 11 26h1
version < 10.0.28000.2704
Windows Server 2019
version < 10.0.17763.9121
Windows Server 2022
version < 10.0.20348.5440
Windows Server 2025
version < 10.0.26100.33222

Related CWEs

CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

References (1)

Source: secure@microsoft.com
PatchVendor Advisory

Timeline

No history available yet.