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High 7.0Published Jan 13, 2026

CVE-2026-21219Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability

Updated under an hour ago ()

Does this affect you?

It affects Microsoft Windows SDK and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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

CVSS
7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Weakness (CWE)
CWE-416
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
microsoft
NVD analysis
Analyzed
Record last updated
Jul 30, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Microsoft Windows SDK
microsoft:windows_sdk (from the name)
26100 builds before 10.0.26100.7463
CNA record
microsoft windows_software_development_kit
microsoft:windows_software_development_kit
from 10.0.26100 before 10.0.26100.7463
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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