CVE-2025-59227
High
Description
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Office
PublishedOct 14, 2025
First seenOct 14, 2025
Weakness typeCWE-416Use after free
How to fix
Update
- microsoft 365_copilot16.0.19328.20000 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft office | 2016, 2019 | — |
| microsoft 365_apps | No range specified | — |
| microsoft 365_copilot | v < 16.0.19328.20000 | 16.0.19328.20000 |
| microsoft office_long_term_servicing_channel | 2021, 2024 | — |
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