What is CVE-2026-50480?

CVE-2026-50480 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-50480 cover?

CVE-2026-50480 covers the following CVE IDs: CVE-2026-50480. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-50480?

CVE-2026-50480 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-50480?

CVE-2026-50480 affects 8 products, including: Windows 10 Version 1607 for 32-bit Systems; Windows 10 Version 1607 for x64-based Systems; Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; and others — see the full list on the advisory page.

CVE-2026-50480HighCVSS 7.8

Windows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 17, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-50480 →

📋 Description

Heap-based buffer overflow in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.

🎯 Affected products8

Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
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)

✅ Remediation

KB5099535 (Security Update) — fixed build 10.0.14393.9339 KB5099445 (Monthly Rollup) — fixed build 6.2.9200.26226 KB5099415 (IE Cumulative) — fixed build 1.000 KB5099444 (Monthly Rollup) — fixed build 6.3.9600.23291

🔗 References (9)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50480
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5099535
referencehttps://support.microsoft.com/help/5099535
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5099445
referencehttps://support.microsoft.com/help/5099445
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5099415
referencehttps://support.microsoft.com/help/5099415
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5099444
referencehttps://support.microsoft.com/help/5099444