CVE-2026-75125

Medium

Description

PLANET GS-4210-16P2S V3 firmware before 3.441b260626 contains an authenticated null pointer dereference vulnerability in /cgi-bin/dispatcher.cgi. The web_poe_alive_rmtip_post handler dereferences the rmtIP parameter without verifying its presence. A remote authenticated attacker can send a crafted request omitting the rmtIP parameter to cause the CGI process to dereference a null pointer and crash, resulting in denial of service of the web management interface.

SeverityMedium

CVSS4.9

Exploit probability—

ProductPLANET GS-4210-16P2S V3

PublishedAug 28, 2026

First seenAug 28, 2026

Weakness typeCWE-476NULL pointer dereference

How to fix

Update

PLANET Technology Corp. PLANET GS-4210-16P2S V33.441b260626 or later

Patches

planet.com.tw/en/support/security-advisory/10

Affected products

Product	Affected versions	Fixed in
PLANET Technology Corp. PLANET GS-4210-16P2S V3	v < 3.441b260626	3.441b260626

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