CVE-2026-70250

Fix

Microsoft's update · Critical

• KB5126835 — Windows Server 2012, Windows Server 2012 (Server Core installation) · build 6.2.9200.26434 · restart required
• KB5126836 — Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) · build 6.3.9600.23470 · restart required
• KB5126868 — Windows Server 2016, Windows Server 2016 (Server Core installation) · build 10.0.14393.9612 · restart required
• KB5126651 — Windows Server 2019, Windows Server 2019 (Server Core installation) · build 10.0.17763.9376 · restart required
• KB5126655 — Windows Server 2022, Windows Server 2022 (Server Core installation) · build 10.0.20348.5761 · restart required
• KB5126646 — Windows Server 2025, Windows Server 2025 (Server Core installation) · build 10.0.26100.33650 · 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-2026-70250 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.