Is CVE-2026-75124 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75124 being exploited in the wild.

How severe is CVE-2026-75124?

High severity, with a CVSS score of 7.5, published 28 August 2026.

Which products and versions are affected?

PLANET GS-4210-16P2S V3 before 3.441b260626.

Is there a fix for CVE-2026-75124?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-75124 attacked?

It is attacked over the network.

Am I affected by CVE-2026-75124?

Check whether you run PLANET GS-4210-16P2S V3 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75124: PLANET GS-4210-16P2S V3 pre-authentication memory corruption

CVE-2026-75124 · Severity: high · CVSS 7.5 · Published 2026-08-28

The PLANET GS-4210-16P2S V3 is a managed network switch used in corporate environments to control traffic between servers and endpoints. A pre-authentication vulnerability in its web management interface allows an unauthenticated attacker to send a specially crafted web request that crashes the management service, rendering the switch unmanageable. An attacker could exploit this to disrupt network operations or potentially gain deeper system access.

Technologies: PLANET GS-4210-16P2S V3. Vendors: PLANET.

Quick answers

Is CVE-2026-75124 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75124 being exploited in the wild.
How severe is CVE-2026-75124?: High severity, with a CVSS score of 7.5, published 28 August 2026.
Which products and versions are affected?: PLANET GS-4210-16P2S V3 before 3.441b260626.
Is there a fix for CVE-2026-75124?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-75124 attacked?: It is attacked over the network.
Am I affected by CVE-2026-75124?: Check whether you run PLANET GS-4210-16P2S V3 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is a classic buffer overflow (CWE-120) in the HTTP query-string parsing logic of the dispatcher.cgi web interface. The vulnerable _readHttpParam function reads an oversized GET request parameter without ensuring proper NUL termination, then passes the data to parse_query_string where it is processed into a fixed-size stack buffer. An unauthenticated remote attacker can send an oversized GET request to /cgi-bin/dispatcher.cgi to trigger denial of service or memory corruption. No authentication is required; the network vector is direct HTTP. A patch is available in firmware version 3.441b260626 and later.

Affected products

PLANET GS-4210-16P2S V3 before 3.441b260626

Timeline

2026-08-28: disclosed

References

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