What is CVE-2026-70122?

CVE-2026-70122 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Broadcast DVR User Service Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-70122 cover?

CVE-2026-70122 covers the following CVE IDs: CVE-2026-70122. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-70122?

CVE-2026-70122 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-70122?

CVE-2026-70122 affects 16 products, including: 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; and others — see the full list on the advisory page.

CVE-2026-70122HighCVSS 6.5

Windows Broadcast DVR User Service Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 13, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-70122 →

📋 Description

Time-of-check time-of-use (toctou) race condition in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.

🎯 Affected products16

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

✅ Remediation

KB5127648 (Security Update) — fixed build 10.0.26300.9711 KB5126657 (Security Update) — fixed build 10.0.19044.7807 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

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products16

✅ Remediation

🔗 References (9)