CVE-2026-75125 PLANET GS-4210-16P2S V3 Null Pointer Dereference DoS via dispatcher.cgi web_poe_alive_rmtip_post
An authenticated attacker can crash the web management interface of PLANET switches by sending a crafted request with a missing parameter.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75125?
CVE-2026-75125 is a medium-severity vulnerability in PLANET GS-4210-16P2S V3, published on 28 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-476
Which versions are affected by CVE-2026-75125?
How do I fix CVE-2026-75125?
No fix has been published for CVE-2026-75125 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75125 being exploited?
There is no known exploitation of CVE-2026-75125 in the wild and no public exploit code.
Sources
Also known as GHSA-rmw4-p4vg-g29j.