CVE-2026-21219
Unknown
Unknown - Not Provided
Use-After-Free in Inbox COM Objects Enables Local Code Execution
Publication date: 2026-01-13
Last updated on: 2026-02-09
Assigner: Microsoft Corporation
Description
Description
Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | windows_software_development_kit | From 10.0.26100 (inc) to 10.0.26100.7463 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a use-after-free issue in Inbox COM Objects that allows an unauthorized attacker to execute code locally on the affected system. [1]
How can this vulnerability impact me? :
An attacker exploiting this vulnerability can execute code locally with potentially high impact, including full control over the affected system, leading to confidentiality, integrity, and availability compromises. [1]
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