Tracker / CVE-2026-21511
CVE-2026-21511
High 7.5
Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Affected products and versions
| microsoft | 365_apps |
|---|---|
| microsoft | office |
| microsoft | office_long_term_servicing_channel |
| microsoft | sharepoint_server |
| microsoft | sharepoint_server · … → 16.0.19127.20518 |
| microsoft | word |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.