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CVE-2026-75125— PLANET GS-4210-16P2S Null Pointer Dereference DoS via dispatcher.cgi web_poe_alive_rmtip_post

Quick assessment

Affected
PLANET Technology Corp. PLANET GS-4210-16P2S
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PLANET GS-4210-16P2S 在固件版本 3.441b260626 之前的版本中，其 存在一个经过身份验证的空指针解引用漏洞。具体而言， 处理器在解引用 参数时未验证该参数是否存在。经过身份验证的远程攻击者可以发送一个省略 参数的特制请求，导致 CGI 进程解引用空指针并崩溃，从而造成 Web 管理界面的拒绝服务（DoS）。

CVSS 4.9 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
PLANET Technology Corp. PLANET GS-4210-16P2S < 3.441b260626 affected
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I. Basic Information for CVE-2026-75125

Vulnerability Information
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Vulnerability Title
PLANET GS-4210-16P2S Null Pointer Dereference DoS via dispatcher.cgi web_poe_alive_rmtip_post
Source: CVE Program / CVE List V5
Vulnerability Description
PLANET GS-4210-16P2S 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
PLANET Technology Corp. PLANET GS-4210-16P2S 0 ~ 3.441b260626 -

II. Public POCs for CVE-2026-75125

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III. Intelligence Information for CVE-2026-75125

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Vendor Advisories for CVE-2026-75125 (2)

Same Patch Batch · PLANET Technology Corp. · 2026-08-28 · 8 CVEs total

CVE-2026-75124 7.5 HIGH PLANET GS-4210-16P2S Memory Corruption via dispatcher.cgi _readHttpParam
CVE-2026-75121 7.2 HIGH PLANET GS-4210-16P2S Command Injection via dispatcher.cgi web_vlan_membership_edit_dialog_
CVE-2026-75122 7.2 HIGH PLANET GS-4210-16P2S Command Injection via httpuploadcert.cgi
CVE-2026-75123 7.2 HIGH PLANET GS-4210-16P2S Command Injection via dispatcher.cgi web_smtp_test_post
CVE-2026-75126 4.9 MEDIUM PLANET GS-4210-16P2S Stack Buffer Overflow via dispatcher.cgi Standard Handlers
CVE-2026-77217 4.9 MEDIUM PLANET GS-4210-16P2S Stack Buffer Overflow and NULL Pointer Dereference via dispatcher.cgi
CVE-2026-77218 4.9 MEDIUM PLANET GS-4210-16P2S Stack Buffer Overflow via dispatcher.cgi Credential Handlers

IV. Related Vulnerabilities

Same product: PLANET GS-4210-16P2S
Same vendor: PLANET Technology Corp.
Same weakness: CWE-476

V. Comments for CVE-2026-75125

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