CVE-2021-4459 MEDIUM

CVE-2021-4459: SMA: Directory Traversal in Sunny Boy <3.10.27.R

Vendor Sma
Product Boy 3.0
Weakness CWE-23
Published August 27, 2025
Last update August 27, 2025
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 27, 2025 CVE published
August 27, 2025 Record updated