CVE-2025-49666

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to execute code over a network.

Score

CVSS 3.1 7.2 High

Status

Analyzed - secure@microsoft.com

Published

2025-07-08

Last modified

2026-02-13

Weaknesses

CWE-122

Affected products

• Windows Server 2016 (Microsoft)
• Windows Server 2019 (Microsoft)
• Windows Server 2022 (Microsoft)
• Windows Server 2022 23h2 (Microsoft)
• Windows Server 2025 (Microsoft)
• Windows Server 23h2 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49666