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CVE-2007-5638

Published: Oct 23, 2007Updated: Apr 23, 2026 Sources: CVE List NVDCWE-200
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
1.5%
Top 29.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:MAu:NC:PI:NA:N
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:PConfidentiality
Partial
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-200CWE-310

Affected Products

business communications managernortel
On-prem
Networking Infrastructure / vpn-gateway
centrex ip client managernortel
On-prem
Networking Infrastructure / vpn-gateway
centrex ip element managernortel
On-prem
Networking Infrastructure / vpn-gateway
meridian option 11cnortel
On-prem
Networking Infrastructure / vpn-gateway
meridian option 51cnortel
On-prem
Networking Infrastructure / vpn-gateway
nortelcommercialCANetworking Infrastructureaka contivity, mobile voice client 2050, business communications manager
and 5 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

http://osvdb.org/41770
osvdb.org
http://secunia.com/advisories/27234
secunia.com
http://securityreason.com/securityalert/3272
securityreason.com
and 5 more references View all →

Timeline

Published
Oct 23, 2007
Last Updated
Apr 23, 2026

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