CVE-2026-75123

HIGH 7.2

PLANET GS-4210-16P2S Command Injection via dispatcher.cgi web_smtp_test_post

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

PLANET GS-4210-16P2S firmware before 3.441b260626 contains an authenticated OS command injection vulnerability in /cgi-bin/dispatcher.cgi. The web_smtp_test_post handler incorporates a caller-supplied SMTP server value directly into a shell command without sanitization. A remote attacker with administrator web credentials can send a crafted SMTP server value to execute arbitrary operating-system commands on the device.

CWE	CWE-78
Vendor	planet technology corp.
Product	planet gs-4210-16p2s
Published	Aug 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

PLANET Technology Corp. / PLANET GS-4210-16P2S

0 < 3.441b260626

References

NVD ↗ CVE.org ↗ EPSS Data ↗

planet.com.tw: https://www.planet.com.tw/en/support/security-advisory/10 vulncheck.com: https://www.vulncheck.com/advisories/planet-gs-4210-16p2s-command-injection-via-dispatcher-cgi-web-smtp-test-post

Credits

Jincheng Wang (@winmt) Professor Le Yu of Nanjing University of Posts and Telecommunications Professor Xiapu Luo of The Hong Kong Polytechnic University