High · 7.0 CVE-2026-21219 EUVD-2026-2102GHSA-wvh3-vgpw-w4mr

Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability

Published Jan 13, 2026 · Updated Jul 30, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows SDK Platform: Windows

Description

Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Windows SDK	26100 – < 10.0.26100.7463	10.0.26100.7463

Advisories 3

WID-SEC-2026-0082 Microsoft Windows SDK: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Jan 13, 2026
NCSC-2026-0011 Kwetsbaarheid verholpen in Microsoft Developer Tools NCSC-NL (Netherlands) · Jan 13, 2026
MSRC-CVE-2026-21219 Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability Microsoft Security Response Center · Jan 13, 2026

References

Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability vendor-advisory patch