High7.8Microsoft Server

High [CVE-2026-50480] Windows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege Vulnerability

This high-severity Microsoft Server advisory covers CVE-2026-50480 affecting Windows Server 2016, Windows Server 2012 R2.

CVE-2026-50480 Published Jul 14, 2026

CVE-2026-50480

Affected products & platforms

Microsoft ServerWindows Server

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Summary

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

Affected products named by the advisory: Windows Server 2016; Windows Server 2012; Windows Server 2012 R2.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Fixed versions

KB5099535 (build 10.0.14393.9339)
KB5099445 (build 6.2.9200.26226)
KB5099415 (build 1.000)
KB5099444 (build 6.3.9600.23291)

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Install the applicable security update for your platform: KB5099535, KB5099445, KB5099415, KB5099444 (see the Microsoft Update Catalog).

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Microsoft Security Update Guide (MSRC)official
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://api.msrc.microsoft.com/cvrf/v3.0/updates; this link opens the Microsoft Server advisory index instead of the raw feed document.
Microsoft Server
Official vendor advisoryofficial
Official advisory page fetched and parsed for the summary, affected/fixed versions and remediation guidance it provides.
Microsoft Server
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-50480NVD CVE.org MITRE

Official resources

Microsoft Update Catalog: KB5099535
Official documentation
Direct download of the KB5099535 security update named in the MSRC remediation data for this CVE.
Microsoft Update Catalog: KB5099445
Official documentation
Direct download of the KB5099445 security update named in the MSRC remediation data for this CVE.
Microsoft Update Catalog: KB5099415
Official documentation
Direct download of the KB5099415 security update named in the MSRC remediation data for this CVE.
MSRC Security Update Guide
Official documentation
Filter by this CVE for per-product KB numbers, severity and exploitability assessment.

Discussion(0)

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