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Δ / VULNERABILITY RECORD

CVE-2026-21219.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Jan 13, 2026

Disclosure summary

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

Source-reported weakness categories

CWE-416

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Jan

Open original source · Updated Jan 13, 2026

Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 7

VendorProduct / associationVersion / bounds
Microsoft update guideWindows SDK (MSRC status code 3)

Vendor remediation references

Original records & references

PUBLISHED 2026-01-13T03:00:00-05:00
MODIFIED 2026-01-13T03:00:00-05:00
INGESTED 2026-10-08T12:45:23-04:00