High severity7.2NVD Advisory· Published Aug 28, 2026

CVE-2026-75121

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 products

Planet/Gs 4210 16p2s Firmwarellm-fuzzy
Range: <3.441b260626

Patches

Vulnerability mechanics

References

www.planet.com.tw/en/support/security-advisory/10nvd
www.vulncheck.com/advisories/planet-gs-4210-16p2s-command-injection-via-dispatcher-cgi-web-vlan-membership-edit-dialog-postnvd

News mentions

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