CVE-2025-9090: Tenda AC20 Telnet Service telnet websFormDefine command injection

Published Aug 17, 2025
·
Updated

A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service. The manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Affected Software

3 affected components
Tenda AC20
All of the following
Tenda Ac20 Firmware=16.03.08.12
Tenda AC20

Event History

Aug 17, 2025
CVE Published
via MITRE·02:02 AM
Data Sourced
via MITRE·02:02 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·03:15 AM
DescriptionSeverityWeaknessAffected Software
Aug 18, 2025
Exploit Published
12:00 AM
Known Exploited
03:03 PM
Feb 28, 57989
Event
via FIRST·08:26 AM
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-2025-9090?

CVE-2025-9090 is considered a high-severity vulnerability due to its potential for remote command injection.

2

How do I fix CVE-2025-9090?

To fix CVE-2025-9090, update the Tenda AC20 to the latest firmware version provided by the manufacturer.

3

What component is affected by CVE-2025-9090?

CVE-2025-9090 affects the Telnet Service in the function websFormDefine of the file /goform/telnet.

4

Can CVE-2025-9090 be exploited remotely?

Yes, CVE-2025-9090 can be exploited remotely, allowing attackers to perform command injection.

5

Which device models are impacted by CVE-2025-9090?

CVE-2025-9090 impacts the Tenda AC20 router running firmware version 16.03.08.12.

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