CVE-2026-75123: high-severity vulnerability in PLANET GS-4210-16P2S V3
PLANET GS-4210-16P2S V3 Command Injection via dispatcher.cgi web_smtp_test_post
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 1.5%
PLANET GS-4210-16P2S V3 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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
PLANET Technology Corp. · PLANET GS-4210-16P2S V3Related CVEs — PLANET GS-4210-16P2S V3
In the same product, most dangerous first.
CVE-2026-75121HIGHPLANET GS-4210-16P2S V3 Command Injection via dispatcher.cgi web_vlan_membership_edit_dialog_postEPSS 1.5%CVE-2026-75122HIGHPLANET GS-4210-16P2S V3 Command Injection via httpuploadcert.cgiEPSS 0.9%CVE-2026-75124HIGHPLANET GS-4210-16P2S V3 Memory Corruption via dispatcher.cgi _readHttpParamEPSS 0.7%CVE-2026-77217MEDIUMPLANET GS-4210-16P2S V3 Stack Buffer Overflow and NULL Pointer Dereference via dispatcher.cgi RADIUS HandlersEPSS 0.6%CVE-2026-75126MEDIUMPLANET GS-4210-16P2S V3 Stack Buffer Overflow via dispatcher.cgi Standard HandlersEPSS 0.6%CVE-2026-77218MEDIUMPLANET GS-4210-16P2S V3 Stack Buffer Overflow via dispatcher.cgi Credential HandlersEPSS 0.6%