CVE-2026-21235: Microsoft Windows 10 1607

High severity, CVSS 7.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 10 1607: before 10.0.14393.8868 (fixed in 10.0.14393.8868)
• Microsoft Windows 10 1809: before 10.0.17763.8389 (fixed in 10.0.17763.8389)
• Microsoft Windows 10 21h2: before 10.0.19044.6937 (fixed in 10.0.19044.6937)
• Microsoft Windows 10 22h2: before 10.0.19045.6937 (fixed in 10.0.19045.6937)
• Microsoft Windows 11 23h2: before 10.0.22631.6649 (fixed in 10.0.22631.6649)
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.8868 (fixed in 10.0.14393.8868)
• Microsoft Windows Server 2019: before 10.0.17763.8389 (fixed in 10.0.17763.8389)
• Microsoft Windows Server 2022: before 10.0.20348.4711 (fixed in 10.0.20348.4711)

Published 2026-02-10. Last modified 2026-06-17.