What is CVE-2024-21417?

CVE-2024-21417 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Text Services Framework Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2024-21417 cover?

CVE-2024-21417 covers the following CVE IDs: CVE-2024-21417. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2024-21417?

CVE-2024-21417 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2024-21417?

CVE-2024-21417 affects 19 products, including: 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; and others — see the full list on the advisory page.

CVE-2024-21417HighCVSS 8.8

Windows Text Services Framework Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2024-21417 →

📋 Description

What privileges could be gained by an attacker who successfully exploited the vulnerability? An attacker could use this vulnerability to elevate privileges from a Low Integrity Level in a contained ("sandboxed") execution environment to a Medium Integrity Level or a High Integrity Level. Please refer to AppContainer isolation and Mandatory Integrity Control for more information.

According to the CVSS metric, successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In this case, a successful attack could be performed from a low privilege AppContainer. The attacker could elevate their privileges and execute code or access resources at a higher integrity level than that of the AppContainer execution environment.

🎯 Affected products19

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 22H2 for ARM64-based Systems
Windows 11 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 21H2 for ARM64-based Systems
Windows 11 version 21H2 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2022, 23H2 Edition (Server Core installation)

✅ Remediation

KB5040430 (Security Update) — fixed build 10.0.17763.6054 KB5040437 (Security Update) — fixed build 10.0.20348.2582 KB5040431 (Security Update) — fixed build 10.0.22000.3079 KB5040427 (Security Update) — fixed build 10.0.19044.4651 KB5040442 (Security Update) — fixed build 10.0.22621.3880 KB5040427 (Security Update) — fixed build 10.0.19045.4651 KB5040442 (Security Update) — fixed build 10.0.22631.3880 KB5040438 (Security Update) — fixed build 10.0.25398.1009

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products19

✅ Remediation

🔗 References (13)