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Actiontec GT784WN Wireless N DSL Modem contains multiple vulnerabilities

Vulnerability Note VU#335192

Original Release Date: 2015-08-11 | Last Revised: 2015-08-11


Actiontec GT784WN Wireless N DSL Modem, versions NCS01-1.0.12 and earlier, contains multiple vulnerabilities.


CWE-259: Use of Hard-coded Password - CVE-2015-2904

Actiontec GT784WN Wireless N DSL Modem contains multiple hard-coded credentials that enable a user to log into the web administration interface with root privileges.

CWE-352: Cross-Site Request Forgery (CSRF) - CVE-2015-2905

Actiontec GT784WN Wireless N DSL Modem contains a global cross-site request forgery (CSRF) vulnerability. An attacker can perform actions with the same permissions as a victim user, provided the victim has an active session and is induced to trigger the malicious request. Note that in combination with hard-coded credentials, an attacker can reliably establish an active session as part of an attack and therefore does not require a victim to be logged in.

The CVSS score below describes CVE-2015-2904.


A remote, unauthenticated attacker may be able to execute arbitrary script in the context of the end-user's browser session or perform actions as an authenticated user. A network-based attacker can take complete control of an affected device.


Apply an update

Actiontec has released NCS01-1.0.13 to address these vulnerabilities. Users are encouraged to update their firmware to the latest release.

Vendor Information

Affected   Unknown   Unaffected


Notified:  July 13, 2015 Updated:  August 10, 2015

Statement Date:   August 06, 2015



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References


Actiontec GT784WN Wireless N DSL Modem is affected.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector
Base 8.3 AV:A/AC:L/Au:N/C:C/I:C/A:C
Temporal 6.5 E:POC/RL:OF/RC:C
Environmental 4.9 CDP:N/TD:M/CR:ND/IR:ND/AR:ND



These vulnerabilities were reported by Joel Land of the CERT/CC.

This document was written by Joel Land.

Other Information

CVE IDs: CVE-2015-2904, CVE-2015-2905
Date Public: 2015-08-11
Date First Published: 2015-08-11
Date Last Updated: 2015-08-11 20:48 UTC
Document Revision: 17

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