Advisory severityHigh7.0Microsoft Server Updated

High [CVE-2026-70243] Windows Kernel Elevation of Privilege Vulnerability

This high-severity Microsoft Server advisory covers CVE-2026-70243 affecting Windows Server 2025.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-70243 Source published Oct 13, 2026Source updated Oct 13, 2026

VulniPulse record published Oct 13, 2026Record updated Oct 13, 2026

CVE-2026-70243

Affected products & platforms

Microsoft ServerWindows Server

Open source advisory

Android app · Google Play

Monitor future Microsoft Server CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

Windows Kernel Elevation of Privilege Vulnerability

Affected product named by the advisory: Windows Server 2025.

Affected versions

Windows 11 version 23H2 10.0.22631.0 before 10.0.22631.7652
Windows 11 Version 23H2 10.0.22631.0 before 10.0.22631.7652
Windows Server 2025 10.0.26100.0 before 10.0.26100.33650
Windows Server 2025 (Server Core installation) 10.0.26100.0 before 10.0.26100.33650

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Fixed versions

KB5126646 (build 10.0.26100.33650)
KB5126653 (build 10.0.22631.7652)

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Install the applicable security update for your platform: KB5126646, KB5126653 (see the Microsoft Update Catalog).

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.