A vulnerability in the Cisco IP Phone 7861 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
Cisco has confirmed the vulnerability and released software updates.
To exploit this vulnerability, an attacker may need access to trusted, internal networks to send crafted network packets to the affected device. This access requirement may reduce the likelihood of a successful exploit.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.