# CVE-2026-5692: Totolink A7100RU command injection in setGameSpeedCfg

Source: https://junglewise.ai/threats/cve-2026-5692-totolink-a7100ru-command-injection-in-setgamespeedcfg  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-07. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-5692 · Severity: high · CVSS 7.3 · Published 2026-04-07

The Totolink A7100RU is a wireless router used for home and business networking. A security flaw in its web management interface allows a remote attacker to take control of the device by sending a specially crafted request. This could lead to unauthorized access to network traffic, service disruptions, or the use of the router as a foothold for further attacks on the internal network.

Technologies: [TOTOLINK A7100ru](https://junglewise.ai/threats/technologies/a7100ru). Vendors: [TOTOLINK](https://junglewise.ai/threats/vendors/totolink).

## Quick answers

**Is CVE-2026-5692 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-5692 being exploited in the wild.

**How severe is CVE-2026-5692?** High severity, with a CVSS score of 7.3, published 7 April 2026.

**Which products and versions are affected?** TOTOLINK A7100ru 7.4cu.2313_b20191024.

**Is there a fix for CVE-2026-5692?** 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-2026-5692 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-5692?** Check whether you run TOTOLINK A7100ru 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 A7100RU router firmware version 7.4cu.2313_b20191024. The flaw is located within the 'setGameSpeedCfg' function in the '/cgi-bin/cstecgi.cgi' binary. The application fails to properly sanitize the 'enable' parameter before passing it to the 'Uci_Set_Str' function and subsequently to 'CsteSystem', where it is executed via 'execv()'. A remote, unauthenticated attacker can exploit this by sending a crafted POST request containing shell metacharacters (e.g., backticks) in the 'enable' field to execute arbitrary system commands with the privileges of the web server. A public proof-of-concept (PoC) demonstrating the use of 'wget' via this injection has been disclosed.

## Affected products

- Totolink A7100RU 7.4cu.2313_b20191024

## Timeline

- 2026-04-07: advisory: Initial disclosure by VulDB/NVD
- 2026-04-07: disclosed: Public PoC released on GitHub

## References

- [https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_190/README.md](https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_190/README.md)
- [https://vuldb.com/submit/792963](https://vuldb.com/submit/792963)
- [https://vuldb.com/vuln/355519](https://vuldb.com/vuln/355519)
- [https://vuldb.com/vuln/355519/cti](https://vuldb.com/vuln/355519/cti)
- [https://www.totolink.net/](https://www.totolink.net/)

## Related threats

- [Totolink A7100RU command injection in setFirewallType](https://junglewise.ai/threats/cve-2026-5691-totolink-a7100ru-command-injection-in-setfirewalltype)
- [Totolink A7100RU OS command injection in setRemoteCfg](https://junglewise.ai/threats/cve-2026-5690-totolink-a7100ru-os-command-injection-in-setremotecfg)
- [Totolink A7100RU command injection in setNtpCfg](https://junglewise.ai/threats/cve-2026-5689-totolink-a7100ru-command-injection-in-setntpcfg)
- [Totolink A7100RU OS command injection in setDdnsCfg](https://junglewise.ai/threats/cve-2026-5688-totolink-a7100ru-os-command-injection-in-setddnscfg)
- [Totolink A7100RU OS command injection in cstecgi.cgi](https://junglewise.ai/threats/cve-2026-5678-totolink-a7100ru-os-command-injection-in-cstecgi-cgi)