What is CVE-2025-50166?

CVE-2025-50166 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Distributed Transaction Coordinator (MSDTC) Information Disclosure Vulnerability

Which CVE IDs does CVE-2025-50166 cover?

CVE-2025-50166 covers the following CVE IDs: CVE-2025-50166. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-50166?

CVE-2025-50166 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-50166?

CVE-2025-50166 affects 37 products, including: Windows 10 Version 1607 for 32-bit Systems; Windows 10 Version 1607 for x64-based Systems; Windows 10 Version 1809 for 32-bit Systems; Windows 10 Version 1809 for x64-based Systems; Windows 10 Version 21H2 for 32-bit Systems; and others — see the full list on the advisory page.

CVE-2025-50166HighCVSS 6.5

Windows Distributed Transaction Coordinator (MSDTC) Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

August 12, 2025

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2025-50166 →

📋 Description

Integer overflow or wraparound in Windows Distributed Transaction Coordinator allows an authorized attacker to disclose information over a network.

🎯 Affected products37

Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 22H2 for 32-bit Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 10 Version 22H2 for x64-based Systems
Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 11 Version 22H2 for ARM64-based Systems
Windows 11 Version 22H2 for x64-based Systems
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)
+7 more not shown

✅ Remediation

KB5063877 (Security Update) — fixed build 10.0.17763.7678 KB5063880 (Security Update) — fixed build 10.0.20348.4052 KB5063812 (SecurityHotpatchUpdate) — fixed build 10.0.20348.3989 KB5063709 (Security Update) — fixed build 10.0.19044.6216 KB5063875 (Security Update) — fixed build 10.0.22621.5768 KB5063709 (Security Update) — fixed build 10.0.19045.6216 KB5063878 (Security Update) — fixed build 10.0.26100.4946 KB5064010 (SecurityHotpatchUpdate) — fixed build 10.0.26100.4851 KB5063875 (Security Update) — fixed build 10.0.22631.5768 KB5063899 (Security Update) — fixed build 10.0.25398.1791 KB5063889 (Security Update) — fixed build 10.0.10240.21100 KB5063871 (Security Update) — fixed build 10.0.14393.8330 KB5063888 (Monthly Rollup) — fixed build 6.0.6003.23471 KB5063948 (Security Only) — fixed build 6.0.6003.23471 KB5063947 (Monthly Rollup) — fixed build 6.1.7601.27872 KB5063927 (Security Only) — fixed build 6.1.7601.27872 KB5063906 (Monthly Rollup) — fixed build 6.2.9200.25622 KB5063950 (Monthly Rollup) — fixed build 6.3.9600.22725

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products37

✅ Remediation

🔗 References (33)