CVE-2026-5975: Totolink A7100RU CGI cstecgi.cgi setDmzCfg os command injection

Published Apr 9, 2026
·
Updated

A vulnerability was identified in Totolink A7100RU 7.4cu.2313b20191024. The impacted element is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wanIdx leads to os command injection. The attack may be performed from remote. The exploit is publicly available and might be used.

Affected Software

1 affected component
TOTOLINK A7100RU=7.4cu.2313_b20191024

Event History

Apr 9, 2026
CVE Published
via MITRE·07:45 PM
Data Sourced
via MITRE·07:45 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeakness
Jun 24, 58257
Event
via FIRST·02:21 PM
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-5975?

CVE-2026-5975 is classified as a high-severity vulnerability due to the potential for OS command injection.

2

How do I fix CVE-2026-5975?

To fix CVE-2026-5975, you should update the Totolink A7100RU firmware to a version that addresses this vulnerability.

3

What are the potential impacts of CVE-2026-5975?

The potential impacts of CVE-2026-5975 include unauthorized access to the operating system and execution of arbitrary commands.

4

What versions of Totolink A7100RU are affected by CVE-2026-5975?

CVE-2026-5975 affects Totolink A7100RU version 7.4cu.2313_b20191024.

5

Is there a workaround for CVE-2026-5975?

Currently, the recommended solution for CVE-2026-5975 is to update to a patched firmware rather than relying on a workaround.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203