Cisco ATA-186 Web interface could reveal sensitive information

cisco-ata-reveal-info (9056) The risk level is classified as MediumMedium Risk


A remote attacker could submit an HTTP POST request consisting of one byte to the ATA-186 Web interface to cause sensitive configuration information to be disclosed, which would include the administrative password.


Obtain Information


Upgrade to the appropriate fixed software version, as listed in Cisco Security Advisory: ATA-186 Password Disclosure Vulnerability. See References.


  • BugTraq Mailing List, Thu May 09 2002 - 12:30:11 CDT: Cisco ATA-186 admin password can be trivially circumvented.
  • Cisco Systems Inc. Security Advisory, 2004 March 29 01:00 GMT: ATA-186 Password Disclosure Vulnerability.
  • BID-4711: Cisco ATA-186 HTTP Device Configuration Disclosure Vulnerability
  • BID-4712: Cisco ATA-186 Web Administration Authentication Bypass Vulnerability
  • CVE-2002-0769: The web-based configuration interface for the Cisco ATA 186 Analog Telephone Adaptor allows remote attackers to bypass authentication via an HTTP POST request with a single byte, which allows the attackers to (1) obtain the password from the login screen, or (2) reconfigure the adaptor by modifying certain request parameters.

Platforms Affected:

  • Cisco ATA-186


May 09, 2002

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