CVE-2026-21219
Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability
HIGH
7
CVSS Score
Published: January 13, 2026 at 05:56 PM UTC
Updated: June 17, 2026 at 10:18 AM UTC
1 product affected across 1 vendorWindows Software Development Kit
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Severity
HIGH7
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 10.0.26100.7463, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21219SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7HIGHmicrosoft
Vector?
Quick Info
StatusANALYZED
CWE
CWE-416
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