# CVE-2026-9534: Totolink CA750-PoE command injection in setWiFiWpsConfig

Source: https://junglewise.ai/threats/cve-2026-9534-totolink-ca750-poe-command-injection-in-setwifiwpsconfig  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-26. Updated: 2026-05-26  
License: CC BY 4.0 with a link back

CVE-2026-9534 · Severity: medium · CVSS 6.3 · Published 2026-05-26

A security 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 sending a specially crafted request to the Wi-Fi configuration settings. If successful, this could allow an unauthorized user to disrupt network operations, intercept traffic, or use the device as a foothold to attack other systems on the corporate network.

Technologies: [TOTOLINK CA750-PoE](https://junglewise.ai/threats/technologies/ca750-poe). Vendors: [TOTOLINK](https://junglewise.ai/threats/vendors/totolink).

## Quick answers

**Is CVE-2026-9534 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9534 being exploited in the wild.

**How severe is CVE-2026-9534?** Medium severity, with a CVSS score of 6.3, published 26 May 2026.

**Which products and versions are affected?** TOTOLINK CA750-PoE 6.2c.510.

**Is there a fix for CVE-2026-9534?** 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-2026-9534 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-9534?** 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 (CWE-78) exists in the Totolink CA750-PoE firmware version 6.2c.510. The flaw is located within the 'setWiFiWpsConfig' function in the '/cgi-bin/cstecgi.cgi' binary (specifically within the wps.so library). The 'PIN' argument is processed without sufficient sanitization before being passed to a system command execution context. A remote attacker with low privileges (authenticated access to the setting handler) can inject arbitrary shell commands using backticks or other shell metacharacters. A public proof-of-concept demonstrates that an attacker can start a telnet daemon to gain a remote shell on the device.

## Affected products

- Totolink CA750-PoE 6.2c.510

## Timeline

- 2026-05-26: disclosed: Initial disclosure via VulDB and GitHub repository
- 2026-05-26: advisory: NVD publication date

## References

- [https://github.com/wudipjq/my_vuln/blob/main/totolink4/vuln_57/57.md](https://github.com/wudipjq/my_vuln/blob/main/totolink4/vuln_57/57.md)
- [https://vuldb.com/submit/813938](https://vuldb.com/submit/813938)
- [https://vuldb.com/vuln/365561](https://vuldb.com/vuln/365561)
- [https://vuldb.com/vuln/365561/cti](https://vuldb.com/vuln/365561/cti)
- [https://www.totolink.net/](https://www.totolink.net/)

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