CVE-2026-44822
High
Description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
SeverityHigh
CVSS8.2
Exploit probability—
Product
Microsoft Excel
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft excel | 2016 | — |
| microsoft 365_apps | No range specified | — |
| microsoft microsoft_365 | No range specified | — |
| microsoft office_2019 | No range specified | — |
| microsoft office_2021 | No range specified | — |
| microsoft office_2024 | No range specified | — |
| microsoft office_online_server | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.