CVE-2026-50406HighCVSS 7.0

Windows Backup Engine Elevation of Privilege Vulnerability

Published
July 17, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-50406 →

📋 Description

Use after free in Windows Backup Engine allows an authorized attacker to elevate privileges locally.

🎯 Affected products12

  • 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 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 11 version 26H1 for x64-based Systems

✅ Remediation

KB5099539 (Security Update) — fixed build 10.0.19044.7548 KB5099539 (Security Update) — fixed build 10.0.19045.7548 KB5101650 (Security Update) — fixed build 10.0.26200.8875 KB5101650 (Security Update) — fixed build 10.0.26100.8875 KB5101649 (Security Update) — fixed build 10.0.28000.2525

🔗 References (7)