CVE-2021-28845: Null Pointer Dereference

Published Aug 10, 2021
·
Updated

Null Pointer Dereference vulnerability exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service by sending the POST request to applycgi via the lang action without a language key.

Affected Software

8 affected components
Trendnet Tew-755ap Firmware=1.11b03
Trendnet TEW-755AP
Trendnet Tew-755ap2kac Firmware=1.11b03
Trendnet TEW-755AP2KAC
Trendnet Tew-821dap2kac Firmware=1.11b03
Trendnet TEW-821DAP2KAC
Trendnet Tew-825dap Firmware=1.11b03
Trendnet TEW-825DAP

Event History

Aug 10, 2021
CVE Published
via MITRE·07:13 PM
Data Sourced
via MITRE·07:13 PM
Description
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 CVE-2021-28845?

CVE-2021-28845 is a Null Pointer Dereference vulnerability that exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03.

2

How does CVE-2021-28845 impact the system?

CVE-2021-28845 could allow a remote malicious user to cause a denial of service by sending a POST request to apply_cgi via the lang action without a language key.

3

Which software versions are affected by CVE-2021-28845?

CVE-2021-28845 affects TRENDnet TEW-755AP firmware version 1.11B03, TEW-755AP2KAC firmware version 1.11B03, TEW-821DAP2KAC firmware version 1.11B03, and TEW-825DAP firmware version 1.11B03.

4

How severe is CVE-2021-28845?

CVE-2021-28845 has a severity rating of 7.5 out of 10 (high severity).

5

Is there a fix available for CVE-2021-28845?

Currently, there is no known fix available for CVE-2021-28845. It is recommended to follow the vendor's advisory and apply any patches or updates as soon as they become available.

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