CVE-2026-75122 PLANET GS-4210-16P2S V3 Command Injection via httpuploadcert.cgi
Remote attackers with admin credentials can execute arbitrary OS commands via unsanitized input in the certificate upload feature.
- 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-2026-75122?
CVE-2026-75122 is a high-severity command injection 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 OS command injection vulnerability in /cgi-bin/httpuploadcert.cgi. The certificate password field in a certificate upload request is incorporated into a shell command without sanitization of shell metacharacters. A remote attacker with administrator web credentials can submit a crafted certificate upload request to execute arbitrary operating-system commands on the device.
Weakness: CWE-78
Which versions are affected by CVE-2026-75122?
How do I fix CVE-2026-75122?
No fix has been published for CVE-2026-75122 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-75122 being exploited?
There is no known exploitation of CVE-2026-75122 in the wild and no public exploit code.
Sources
Also known as GHSA-mw79-c3fw-fm35.