CVE-2026-42893
High
Description
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.
SeverityHigh
CVSS7.4
Exploit probability—
Product
Microsoft Outlook
PublishedMay 12, 2026
First seenMay 12, 2026
Weakness typeCWE-77Command injection
How to fix
Update
- microsoft outlook5.2617.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft outlook | v < 5.2617.1 | 5.2617.1 |
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