The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from…
Priority LOW 35Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.01819 78th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 36
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:nortel:multimedia_communication_server_5100:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:a:nortel:multimedia_communication_server_5200:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:a:nortel:communications_server:1000e:*:*:*:*:*:*:* | 1000e | Running on | Nortel |
| cpe:2.3:a:nortel:communications_server:1000m:*:*:*:*:*:*:* | 1000m | Running on | Nortel |
| cpe:2.3:a:nortel:communications_server:1000s:*:*:*:*:*:*:* | 1000s | Running on | Nortel |
| cpe:2.3:a:nortel:communications_server:2100:*:*:*:*:*:*:* | 2100 | Running on | Nortel |
| cpe:2.3:h:nortel:ip_audio_conference_phone_2033:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:ip_phone_1110:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:ip_phone_1120e:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:ip_phone_1140e:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
- cpe:2.3:a:nortel:multimedia_communication_server_5100:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:a:nortel:multimedia_communication_server_5200:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:a:nortel:communications_server:1000e:*:*:*:*:*:*:* Versions 1000e Running on ·Nortel
- cpe:2.3:a:nortel:communications_server:1000m:*:*:*:*:*:*:* Versions 1000m Running on ·Nortel
- cpe:2.3:a:nortel:communications_server:1000s:*:*:*:*:*:*:* Versions 1000s Running on ·Nortel
- cpe:2.3:a:nortel:communications_server:2100:*:*:*:*:*:*:* Versions 2100 Running on ·Nortel
- cpe:2.3:h:nortel:ip_audio_conference_phone_2033:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:ip_phone_1110:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:ip_phone_1120e:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:ip_phone_1140e:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
Show 26 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:nortel:ip_phone_1150e:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:ip_phone_2001:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:ip_phone_2002:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:ip_phone_2004:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:ip_phone_2007:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:wlan_handset_2210:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:wlan_handset_2211:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:wlan_handset_2212:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:wlan_handset_6120:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:h:nortel:wlan_handset_6140:*:*:*:*:*:*:*:* | all versions | Running on | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:50:*:*:*:*:*:*:* | 50 | Vulnerable | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:50a:*:*:*:*:*:*:* | 50a | Vulnerable | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:50e:*:*:*:*:*:*:* | 50e | Vulnerable | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:200:*:*:*:*:*:*:* | 200 | Vulnerable | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:400:*:*:*:*:*:*:* | 400 | Vulnerable | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:1000:*:*:*:*:*:*:* | 1000 | Vulnerable | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:srg50:*:*:*:*:*:*:* | srg50 | Vulnerable | Nortel |
| cpe:2.3:a:nortel:business_communications_manager:srg200:*:*:*:*:*:*:* | srg200 | Vulnerable | Nortel |
| cpe:2.3:a:nortel:centrex_ip_client_manager:*:*:*:*:*:*:*:* | all versions | Vulnerable | Nortel |
| cpe:2.3:a:nortel:centrex_ip_element_manager:*:*:*:*:*:*:*:* | all versions | Vulnerable | Nortel |
| cpe:2.3:a:nortel:meridian_option_11c:*:*:*:*:*:*:*:* | all versions | Vulnerable | Nortel |
| cpe:2.3:a:nortel:meridian_option_51c:*:*:*:*:*:*:*:* | all versions | Vulnerable | Nortel |
| cpe:2.3:a:nortel:meridian_option_61c:*:*:*:*:*:*:*:* | all versions | Vulnerable | Nortel |
| cpe:2.3:a:nortel:meridian_option_81c:*:*:*:*:*:*:*:* | all versions | Vulnerable | Nortel |
| cpe:2.3:a:nortel:meridian_sl100:cs2100:*:*:*:*:*:*:* | cs2100 | Vulnerable | Nortel |
| cpe:2.3:a:nortel:mobile_voice_client_2050:*:*:*:*:*:*:*:* | all versions | Vulnerable | Nortel |
- cpe:2.3:h:nortel:ip_phone_1150e:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:ip_phone_2001:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:ip_phone_2002:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:ip_phone_2004:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:ip_phone_2007:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:wlan_handset_2210:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:wlan_handset_2211:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:wlan_handset_2212:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:wlan_handset_6120:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:h:nortel:wlan_handset_6140:*:*:*:*:*:*:*:* Versions all versions Running on ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:50:*:*:*:*:*:*:* Versions 50 Vulnerable ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:50a:*:*:*:*:*:*:* Versions 50a Vulnerable ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:50e:*:*:*:*:*:*:* Versions 50e Vulnerable ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:200:*:*:*:*:*:*:* Versions 200 Vulnerable ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:400:*:*:*:*:*:*:* Versions 400 Vulnerable ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:1000:*:*:*:*:*:*:* Versions 1000 Vulnerable ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:srg50:*:*:*:*:*:*:* Versions srg50 Vulnerable ·Nortel
- cpe:2.3:a:nortel:business_communications_manager:srg200:*:*:*:*:*:*:* Versions srg200 Vulnerable ·Nortel
- cpe:2.3:a:nortel:centrex_ip_client_manager:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel
- cpe:2.3:a:nortel:centrex_ip_element_manager:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel
- cpe:2.3:a:nortel:meridian_option_11c:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel
- cpe:2.3:a:nortel:meridian_option_51c:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel
- cpe:2.3:a:nortel:meridian_option_61c:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel
- cpe:2.3:a:nortel:meridian_option_81c:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel
- cpe:2.3:a:nortel:meridian_sl100:cs2100:*:*:*:*:*:*:* Versions cs2100 Vulnerable ·Nortel
- cpe:2.3:a:nortel:mobile_voice_client_2050:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2007-5640
- 2026-10-03 Alias added: GHSA-v3jg-64qp-m2qp
References
More Nortel Business Communications Manager vulnerabilities
- TI-2005-00319 Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with… CVSS 2.0MEDIUM 5.0
- TI-2004-00044 Multiple vulnerabilities in the H.323 protocol implementation for Nortel Networks… CVSS 2.0HIGH 7.5
- TI-2007-05418 The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from… CVSS 2.0MEDIUM 4.3
- TI-2007-05419 The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2007-5640 · CVE Program
- CVE-2007-5640 · NVD
- FIRST EPSS
- GHSA-v3jg-64qp-m2qp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences