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Description

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

PUBLISHED Reserved 2025-12-11 | Published 2026-01-13 | Updated 2026-02-22 | Assigner microsoft




HIGH: 7.0CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-416: Use After Free

Product status

26100 (custom) before 10.0.26100.7463
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21219 (Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability) vendor-advisory patch

cve.org (CVE-2026-21219)

nvd.nist.gov (CVE-2026-21219)

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