The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from…
Priority LOW 23CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-200.
Summary
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from the IP Phone, Business Communications Manager (BCM), and other product lines, use only 65536 different values in the 32-bit ID number field of an RUDP datagram, which makes it easier for remote attackers to guess the RUDP ID and spoof messages. NOTE: this can be leveraged for an eavesdropping attack by sending many Open Audio Stream messages.
Why it matters now
EPSS 0.01473 73rd 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-2007-5638
- 2026-10-03 Alias added: GHSA-h59f-qgvv-5qq2
References
Advisory 1
Other 1
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-2007-05421 The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from… CVSS 2.0HIGH 7.1
- TI-2007-05418 The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2007-5638 · CVE Program
- CVE-2007-5638 · NVD
- FIRST EPSS
- GHSA-h59f-qgvv-5qq2 · 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