CVE-2026-75121

PLANET GS-4210-16P2S V3 Command Injection via dispatcher.cgi web_vlan_membership_edit_dialog_post

HIGH
7.2
CVSS Score
Published: August 28, 2026 at 03:29 PM UTC
Updated: September 8, 2026 at 08:39 PM UTC
1 product affected across 1 vendorGS-4210-16P2S

Using PLANET GS-4210-16P2S by PLANET Technology Corp.?

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Severity
HIGH7.2
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

PLANET GS-4210-16P2S firmware before 3.441b260626 contains an authenticated OS command injection vulnerability in /cgi-bin/dispatcher.cgi. The web_vlan_membership_edit_dialog_post handler incorporates the memberTags POST parameter into a shell command without sanitization. A remote authenticated attacker can send a crafted memberTags value to execute arbitrary operating-system commands on the device.

Affected

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

v < 3.441b260626
Affected range stops below 3.441b260626, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.2HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-78

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