CVE-2021-4459
Medium
Description
An authorized remote attacker can access files and directories outside the intended web root, potentially exposing sensitive system information of the affected Sunny Boy devices.
SeverityMedium
CVSS6.5
Exploit probability—
ProductBoy 3.0
PublishedAug 27, 2025
First seenAug 27, 2025
Weakness typeCWE-23CWE-23
How to fix
Update
- SMA Boy 3.03.10.27.R or later
- SMA Boy 3.63.10.27.R or later
- SMA Boy 4.03.10.27.R or later
- SMA Boy 5.03.10.27.R or later
- SMA Boy 6.03.10.27.R or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| SMA Boy 3.0 | v < 3.10.27.R | 3.10.27.R |
| SMA Boy 3.6 | v < 3.10.27.R | 3.10.27.R |
| SMA Boy 4.0 | v < 3.10.27.R | 3.10.27.R |
| SMA Boy 5.0 | v < 3.10.27.R | 3.10.27.R |
| SMA Boy 6.0 | v < 3.10.27.R | 3.10.27.R |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
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