CVE-2026-70096HighCVSS 9.8

Windows Rich Text Edit Control Remote Code Execution Vulnerability

Published
October 13, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-70096 →

📋 Description

Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.

🎯 Affected products41

  • Microsoft 365 Apps for Enterprise for 32-bit Systems
  • Microsoft 365 Apps for Enterprise for 64-bit Systems
  • Microsoft Office 365 for Mac
  • Microsoft Office LTSC 2021 for 32-bit editions
  • Microsoft Office LTSC 2021 for 64-bit editions
  • Microsoft Office LTSC 2024 for 32-bit editions
  • Microsoft Office LTSC 2024 for 64-bit editions
  • Microsoft Office LTSC for Mac 2021
  • Microsoft Office LTSC for Mac 2024
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 11 Version 26H2 for ARM64-based Systems
  • Windows 11 Version 26H2 for x64-based Systems
  • Windows 11 version 26H1 for x64-based Systems
  • Windows Server 2012
  • +11 more not shown

✅ Remediation

KB5127648 (Security Update) — fixed build 10.0.26300.9711 KBRelease Notes (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KBRelease Notes (Security Update) — fixed build 16.0.14334.20974 KBRelease Notes (Security Update) — fixed build 16.0.17932.21056 KB5126651 (Security Update) — fixed build 10.0.17763.9376 KB5126655 (Security Update) — fixed build 10.0.20348.5761 KB5126657 (Security Update) — fixed build 10.0.19044.7807 KB5126646 (Security Update) — fixed build 10.0.26100.33650 KB5127648 (Security Update) — fixed build 10.0.26200.9711 KB5126653 (Security Update) — fixed build 10.0.22631.7652 KB5127648 (Security Update) — fixed build 10.0.26100.9711 KB5127646 (Security Update) — fixed build 10.0.28000.3231 KB5126868 (Security Update) — fixed build 10.0.14393.9612 KB5126835 (Security Update) — fixed build 6.2.9200.26434 KB5126836 (Security Update) — fixed build 6.3.9600.23470 KBRelease Notes (Security Update)

🔗 References (23)