CVE-2026-70243

Fix

Microsoft's update · Important

• KB5126646 — Windows Server 2025 (Server Core installation), Windows Server 2025 · build 10.0.26100.33650 · restart required
• KB5126653 — Windows 11 Version 23H2 · build 10.0.22631.7652 · 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-2026-70243 Patch, Vendor Advisory

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