What is CVE-2025-49666?

CVE-2025-49666 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Server Setup and Boot Event Collection Remote Code Execution Vulnerability

Which CVE IDs does CVE-2025-49666 cover?

CVE-2025-49666 covers the following CVE IDs: CVE-2025-49666. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-49666?

CVE-2025-49666 has a CVSS v3 base score of 7.2, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-49666?

CVE-2025-49666 affects 9 products, including: Windows Server 2016; Windows Server 2016 (Server Core installation); Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server 2022; and others — see the full list on the advisory page.

CVE-2025-49666HighCVSS 7.2

Windows Server Setup and Boot Event Collection Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 8, 2025

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2025-49666 →

📋 Description

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

🎯 Affected products9

Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2022, 23H2 Edition (Server Core installation)
Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5062557 (Security Update) — fixed build 10.0.17763.7558 KB5062572 (Security Update) — fixed build 10.0.20348.3932 KB5062553 (Security Update) — fixed build 10.0.26100.4652 KB5062570 (Security Update) — fixed build 10.0.25398.1732 KB5062560 (Security Update) — fixed build 10.0.14393.8246

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products9

✅ Remediation

🔗 References (11)