7.1
CVSSv2

CVE-2007-5639

Published: 23/10/2007 Updated: 15/10/2018
CVSS v2 Base Score: 7.1 | Impact Score: 6.9 | Exploitability Score: 8.6
VMScore: 632
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

Vulnerability Summary

The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote malicious users to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.

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nortel ip_softphone_2050

nortel mobile_voice_client_2050