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CVE-2026-70096

9.8 critical SSVC exploitation: none Published
NVD · CVE.org

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

Fix

Microsoft's update · Important

  • KB5127648 — Windows 11 Version 26H2 · build 10.0.26300.9711 · restart required
  • Release Notes — Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems · build https://aka.ms/OfficeSecurityReleases
  • Release Notes — Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2021 for 64-bit editions · build 16.0.14334.20974
  • Release Notes — Microsoft Office LTSC 2024 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions · build 16.0.17932.21056
  • KB5126651 — Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809, 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
  • KB5126657 — Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 · build 10.0.19044.7807 · restart required
  • KB5126657 — Windows 10 Version 22H2, Windows 10 Version 22H2 for 32-bit Systems · build 10.0.19045.7807 · restart required
  • KB5126646 — Windows Server 2025 (Server Core installation), Windows Server 2025 · build 10.0.26100.33650 · restart required
  • KB5127648 — Windows 11 Version 25H2 · build 10.0.26200.9711 · 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
  • KB5127646 — Windows 11 version 26H1, Windows 11 Version 26H1 · build 10.0.28000.3231 · restart required
  • KB5126868 — Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation) · build 10.0.14393.9612 · restart required
  • 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
  • Release Notes — Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office 365 for Mac · build 16.114.26101123

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

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

Change history 2

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 19:31
  2. First seenCVSS 9.8NVD modified 2026-10-13 22:18

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1