7.1 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
0.006 Low
EPSS
Percentile
78.2%
A vulnerability in the SDP negotiation logic of the Cisco Cisco Unified IP Phone 9951, Cisco Unified IP Phone 9971 and the Cisco Unified IP Phone 8961 could allow an unauthenticated, remote attacker to cause the phone to reboot.
The vulnerability is due to improper processing of crafted SDP packets. An attacker could exploit this vulnerability by sending crafted SDP packets to the phone to cause the phone to reload.
Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
To exploit this vulnerability, an attacker must be able to send crafted SDP packets to the targeted device, which may reside on trusted, internal networks that the attacker may need access to. This access requirement decreases 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.
CPE | Name | Operator | Version |
---|---|---|---|
cisco unified ip phones 9900 series firmware | eq | any | |
cisco unified ip phones | eq | 9900 Series Firmware |