VULNERABILITY INTELLIGENCE

CVE-2007-5639

CVSS score7.1 HIGH
EPSS probability1.79%
CISA KEVNot currently listed
Published2007-10-23
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:C

Description

The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers 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.

Primary references