AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-62817

Microsoft Windows DNS: out-of-bounds write

Microsoft

CVE-2026-62817 · Published Aug 11, 2026 · updated Sep 2, 2026

High8.8
Fix: upgrade to 10.0.17763.9121 or later (3 fixed versions below)
Microsoft advisory

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

Affected versions

PackageAffectedFixed in
Windows Server 2019
Product
>= 10.0.17763.0, < 10.0.17763.912110.0.17763.9121
Windows Server 2019 (Server Core installation)
Product
>= 10.0.17763.0, < 10.0.17763.912110.0.17763.9121
Windows Server 2022
Product
>= 10.0.20348.0, < 10.0.20348.549910.0.20348.5499
Windows Server 2025
Product
>= 10.0.26100.0, < 10.0.26100.3329610.0.26100.33296
Windows Server 2025 (Server Core installation)
Product
>= 10.0.26100.0, < 10.0.26100.3329610.0.26100.33296
Details and references
CVSS 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-787

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