CVE-2007-5640

high

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/37254

http://www.securityfocus.com/bid/26124

http://www.securityfocus.com/archive/1/482481/100/0/threaded

http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654641

http://securityreason.com/securityalert/3274

http://secunia.com/advisories/27234

http://osvdb.org/41772

Details

Source: Mitre, NVD

Published: 2007-10-23

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.1

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity: High

EPSS

EPSS: 0.01172