CVE-2026-62878criticalCWE-121

CVE-2026-62878: critical vulnerability in Microsoft Windows Server 2012

Windows DNS Server Remote Code Execution Vulnerability

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48Vexday Risk Score

No sign of exploitation. It has an official Brazilian government alert and has a public proof of concept.

ssvc Attendcvss 9.8epss 1.0%
from disclosure to weapon42 days
Published on NVDAug 11
1st PoC+42d
Official alert in Brazil

Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.

Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows Server 2012Microsoft · Windows Server 2012 R2Microsoft · Windows Server 2012 R2 (Server Core installation)Microsoft · Windows Server 2012 (Server Core installation)Microsoft · Windows Server 2016Microsoft · Windows Server 2016 (Server Core installation)Microsoft · Windows Server 2019Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server 2022Microsoft · Windows Server 2025Microsoft · Windows Server 2025 (Server Core installation)
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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