Tracker / CVE-2026-21258
CVE-2026-21258
Medium 5.5
Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Affected products and versions
| microsoft | 365_apps |
|---|---|
| microsoft | excel |
| microsoft | office |
| microsoft | office_long_term_servicing_channel |
| microsoft | office_online_server · … → 16.0.10417.20097 |
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.