Is CVE-2026-9511 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-9511 being exploited in the wild.

How severe is CVE-2026-9511?

Medium severity, with a CVSS score of 6.3, published 25 May 2026.

Is there a fix for CVE-2026-9511?

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-2026-9511 attacked?

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

Am I affected by CVE-2026-9511?

Check whether you run TOTOLINK CA750-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-2026-9511: Totolink CA750-PoE OS command injection in setWebWlanIdx

CVE-2026-9511 · Severity: medium · CVSS 6.3 · Published 2026-05-25

A vulnerability exists in the Totolink CA750-PoE, a wireless access point used for providing network connectivity. An attacker can exploit this flaw to take control of the device by executing unauthorized system commands. This could lead to a complete compromise of the device, allowing the attacker to intercept network traffic or disrupt operations.

Technologies: TOTOLINK CA750-PoE. Vendors: TOTOLINK.

Quick answers

Is CVE-2026-9511 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-9511 being exploited in the wild.
How severe is CVE-2026-9511?: Medium severity, with a CVSS score of 6.3, published 25 May 2026.
Which products and versions are affected?: TOTOLINK CA750-PoE 6.2c.510.
Is there a fix for CVE-2026-9511?: 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-2026-9511 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9511?: Check whether you run TOTOLINK CA750-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

An OS command injection vulnerability exists in the Totolink CA750-PoE firmware version 6.2c.510. The flaw is located within the 'setWebWlanIdx' function in the '/cgi-bin/cstecgi.cgi' binary (specifically within global.so). The application fails to properly sanitize the 'webWlanIdx' (or 'PIN' in some contexts) parameter before passing it to a system shell. A remote attacker with low privileges can send a crafted POST request to execute arbitrary shell commands, such as starting a telnet daemon for persistent remote access. A public exploit (PoC) is available.

Affected products

Totolink CA750-PoE 6.2c.510

Timeline

2026-05-25: disclosed: Initial disclosure and NVD publication

References

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