CVE-2026-75124: high-severity vulnerability in PLANET GS-4210-16P2S V3
PLANET GS-4210-16P2S V3 Memory Corruption via dispatcher.cgi _readHttpParam
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.7%
PLANET GS-4210-16P2S V3 firmware before 3.441b260626 contains a pre-authentication memory corruption vulnerability in the web management interface where the _readHttpParam function copies an oversized HTTP query string without guaranteeing NUL termination, allowing parse_query_string to process attacker-controlled data into a fixed-size stack buffer. An unauthenticated remote attacker can send an oversized GET request to dispatcher.cgi to cause denial of service of the web management interface and potentially trigger memory corruption.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-2026-75123HIGHPLANET GS-4210-16P2S V3 Command Injection via dispatcher.cgi web_smtp_test_postEPSS 1.5%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-2026-77217MEDIUMPLANET 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%