September 27, 2026
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CVE-2026-62878

Critical9.8Published on August 11, 2026

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

CVSS score9.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)CWE-121
Vendorsmicrosoft

Affected products

VendorsProductVersions
microsoftwindows 10 1607< 10.0.14393.9418
microsoftwindows 10 1809< 10.0.17763.9121
microsoftwindows server 2012-
microsoftwindows server 2016< 10.0.14393.9418
microsoftwindows server 2019< 10.0.17763.9121
microsoftwindows server 2022< 10.0.20348.5440
microsoftwindows server 2025< 10.0.26100.33222

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