vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2021-4459

SMA: Directory Traversal in Sunny Boy <3.10.27.R

MEDIUM
6.5
CVSS Score
Published: August 27, 2025 at 08:00 AM UTC
Updated: June 17, 2026 at 04:19 AM UTC
5 products affected across 1 vendorSunny Boy 3-6Sunny Boy 3-0Sunny Boy 4-0

Using Boy 3.0 by SMA?

Get instant alerts when new vulnerabilities affect Boy 3.0 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Sunny Boy 3-0· SMA
60%
0.0.0 ≤ v < 3.10.27.R0.0.0
Affected range stops below 3.10.27.R, so it looks safe — our inference, not a vendor statement
Sunny Boy 3-6· SMA
60%
0.0.0 ≤ v < 3.10.27.R0.0.0
Affected range stops below 3.10.27.R, so it looks safe — our inference, not a vendor statement
Sunny Boy 4-0· SMA
60%
0.0.0 ≤ v < 3.10.27.R0.0.0
Affected range stops below 3.10.27.R, so it looks safe — our inference, not a vendor statement
Sunny Boy 5-0· SMA
60%
0.0.0 ≤ v < 3.10.27.R0.0.0
Affected range stops below 3.10.27.R, so it looks safe — our inference, not a vendor statement
Sunny Boy 6.0· SMA
60%
0.0.0 ≤ v < 3.10.27.R0.0.0
Affected range stops below 3.10.27.R, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: [email protected]
https://certvde.com/en/advisories/VDE-2025-066

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-23

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card