CVE-2026-100219

Fix

Microsoft's update · Critical

• KB5126655 — Windows Server 2022, Windows Server 2022 (Server Core installation) · build 10.0.20348.5761 · restart required
• KB5126653 — Windows 11 Version 23H2 · build 10.0.22631.7652 · restart required
• KB5127648 — Windows 11 Version 24H2 · build 10.0.26100.9711 · restart required
• KB5127648 — Windows 11 Version 25H2 · build 10.0.26200.9711 · restart required
• KB5127648 — Windows 11 Version 26H2 · build 10.0.26300.9711 · restart required
• KB5126646 — Windows Server 2025, Windows Server 2025 (Server Core installation) · build 10.0.26100.33650 · restart required
• KB5127646 — Windows 11 Version 26H1, Windows 11 version 26H1 · build 10.0.28000.3231 · restart required

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-28 · Exploitation Less Likely.

Patch, vendor advisory and mitigation references on NVD 1

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100219 Patch, Vendor Advisory

Vendor advisories in the News 1

• Microsoft October 2026 Security Updates: 1476 CVEs, 1 exploited, 96 critical Microsoft Security Update Guide · 2026-10-13

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.