Is CVE-2026-124059 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-124059 being exploited in the wild.

How severe is CVE-2026-124059?

Critical severity, with a CVSS score of 9.1, published 7 November 2026.

Is there a fix for CVE-2026-124059?

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-2026-124059 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-124059?

Check whether you run TOTOLINK CA300-PoE 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-2026-124059: TOTOLINK CA300-PoE buffer overflow in WiFi configuration

CVE-2026-124059 · Severity: critical · CVSS 9.1 · Published 2026-11-07

TOTOLINK CA300-PoE is a network access point device. A buffer overflow vulnerability in the WiFi configuration function allows remote attackers to execute arbitrary code or crash the device without authentication, compromising network security and device availability.

Technologies: TOTOLINK CA300-PoE. Vendors: TOTOLINK.

Quick answers

Is CVE-2026-124059 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-124059 being exploited in the wild.
How severe is CVE-2026-124059?: Critical severity, with a CVSS score of 9.1, published 7 November 2026.
Which products and versions are affected?: TOTOLINK CA300-PoE 6.2c.884.
Is there a fix for CVE-2026-124059?: 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-2026-124059 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-124059?: Check whether you run TOTOLINK CA300-PoE 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

A buffer overflow exists in the setWiFiWdsAddConfig function of /cgi-bin/cstecgi.cgi, triggered via manipulation of the ApCliKeyStr parameter. The vulnerability allows remote code execution via network access without prior authentication or user interaction, enabling complete device compromise.

Affected products

TOTOLINK CA300-PoE 6.2c.884

Timeline

2026-11-07: disclosed

References

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