VULNERABILITY INTELLIGENCE

CVE-2007-5640

CVSS score7.1 NONE
EPSS probability1.82%
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 additional Nortel products from the IP Phone, Business Communications Manager (BCM), Mobile Voice Client, and other product lines, allow remote attackers to block calls and force re-registration via a resume message to the Signaling Server that has a spoofed source IP address for the phone. NOTE: the attack is more disruptive if a new spoofed resume message is sent after each re-registration.

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references