CVE Tools

CVE-2007-5636

Published: Oct 23, 2007Updated: Apr 23, 2026 Sources: CVE List NVDCWE-119

No Known Exploits

Patch Available

Description

Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial of service (application abort) and possibly execute arbitrary code via a flood of invalid characters to the RTCP port (5678/udp) that triggers a Windows error message, aka "extraneous messaging."

CVSS Vector Breakdown

Exploitability

AV:NAccess Vector

Network

AC:LAccess Complexity

Low

Au:NAuthentication

None

Impact

C:PConfidentiality

Partial

I:PIntegrity

Partial

A:PAvailability

Partial

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Weaknesses

Affected Products

ip softphone 2050 nortel

On-prem

Networking Infrastructure / vpn-gateway

nortelcommercialCANetworking Infrastructureaka contivity, mobile voice client 2050, business communications manager

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

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References

http://osvdb.org/38521

http://secunia.com/advisories/27252

http://securityreason.com/securityalert/3271

securityreason.com

and 6 more references View all →

Timeline

Published

Oct 23, 2007

Last Updated

Apr 23, 2026

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