Unrated severityNVD Advisory· Published Oct 23, 2007· Updated Apr 23, 2026
CVE-2007-5640
CVE-2007-5640
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.
Affected products
16cpe:2.3:a:nortel:business_communications_manager:1000:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:a:nortel:business_communications_manager:1000:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:business_communications_manager:200:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:business_communications_manager:400:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:business_communications_manager:50:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:business_communications_manager:50a:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:business_communications_manager:50e:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:business_communications_manager:srg200:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:business_communications_manager:srg50:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:centrex_ip_client_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:centrex_ip_element_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:meridian_option_11c:*:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:meridian_option_51c:*:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:meridian_option_61c:*:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:meridian_option_81c:*:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:meridian_sl100:cs2100:*:*:*:*:*:*:*
- cpe:2.3:a:nortel:mobile_voice_client_2050:*:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- support.nortel.com/go/main.jspnvdPatch
- www.csnc.ch/static/advisory/csnc/nortel_IP_phone_forced_re-authentication_v1.0.txtnvdExploit
- secunia.com/advisories/27234nvdVendor Advisory
- osvdb.org/41772nvd
- securityreason.com/securityalert/3274nvd
- www.securityfocus.com/archive/1/482481/100/0/threadednvd
- www.securityfocus.com/bid/26124nvd
- exchange.xforce.ibmcloud.com/vulnerabilities/37254nvd
News mentions
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