Cisco – Cisco SPA 300 and 500 Series IP Phones could Allow Remote Users Listen to and Make Phone Calls

Advisory ID


Vulnerability Information



Using a crafted XML request, an attacker can read audio-stream data or originate telephone calls on the Cisco Small Business IP phones SPA 300 and SPA 500 7.5.5. in their default configuration which does not properly support authentication.

Technical Information



A vulnerability was reported in Cisco SPA 300 and 500 Series IP phones. A remote user can obtain potentially sensitive information on the target system. A remote user can make phone calls. A remote user can send a specially crafted XML request to listen to a remote audio stream or make phone calls on the target device.  For more information on the affected versions, CVE-2015-0670 was assigned for this bug.


Release Date






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External Resources



Cisco Security Advisory

Common Vulnerabilities and Exposures (CVE)