EUVD-2026-67787
GHSA-m873-gx73-4mvm
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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:X/V:X/RE:X/U:X
Network-accessible web interface (AV:N), low complexity crafted POST (AC:L), high privilege required for RADIUS config pages (PR:H), scope unchanged as only the local CGI process crashes (S:U), availability-only impact confirmed by description and CVSS 4.0 source data.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
1DescriptionCVE.org
PLANET GS-4210-16P2S firmware before 3.441b260626 contains authenticated stack buffer overflow and null pointer dereference vulnerabilities in /cgi-bin/dispatcher.cgi. The web_radiusSrv*_post family of handlers copies the radKey, radKey_0, radDftParamKey, radName, and radIp POST parameters into fixed-size stack buffers without length validation, and additionally dereferences radName and radIp without verifying their presence in the request. A remote authenticated attacker can send crafted requests to crash the CGI process or web management service, resulting in denial of service.
AnalysisAI
Stack-based buffer overflow and null pointer dereference vulnerabilities in the PLANET GS-4210-16P2S managed PoE switch firmware (all versions before 3.441b260626) allow a remote authenticated attacker to crash the CGI-based web management service by submitting crafted POST requests to RADIUS server configuration handlers. The web_radiusSrv*_post handler family in /cgi-bin/dispatcher.cgi copies user-controlled parameters into fixed-size stack buffers without bounds checking and dereferences radName/radIp pointers without confirming their presence. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires valid high-privilege (administrative) credentials to the GS-4210-16P2S web management interface, as confirmed by PR:H in the CVSS 4.0 vector - unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.9 reflects a network-accessible attack vector but is substantially moderated by the high-privilege authentication requirement (PR:H), which is the primary risk-reduction factor for this vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to upgrade GS-4210-16P2S firmware to version 3.441b260626 or later, as confirmed by the Planet Technology security advisory at https://www.planet.com.tw/en/support/security-advisory/10. … Detailed patch versions, workarounds, and compensating controls in full report. |
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More in Planet Gs 4210 16P2S
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Authenticated OS command injection in PLANET GS-4210-16P2S managed switch firmware prior to 3.441b260626 enables a remot
OS command injection in the PLANET GS-4210-16P2S managed PoE switch firmware before 3.441b260626 allows an authenticated
Stack-based buffer overflow vulnerabilities in the PLANET GS-4210-16P2S managed PoE switch web management interface allo
Stack-based buffer overflows in PLANET GS-4210-16P2S managed switch firmware before 3.441b260626 allow a remote administ
Null pointer dereference in PLANET GS-4210-16P2S managed switch firmware before 3.441b260626 allows remote authenticated
Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Denial Of Service
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External POC / Exploit Code
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