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Vulnerability record · CVE-2026-75124 · published 28 August 2026

CVE-2026-75124: Classic buffer overflow vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.71% · top 48.5% CWE-120 · Classic buffer overflow Awaiting Analysis
8.7CVSS 4.0 base score
0.71%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
8 Sep 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://www.planet.com.tw/en/support/security-advisory/10
https://www.vulncheck.com/advisories/planet-gs-4210-16p2s-memory-corruption-via-dispatcher-cgi-readhttpparam

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Source: NIST National Vulnerability Database (record CVE-2026-75124), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.