TI-2007-05417 Aliases CVE-2007-5636 GHSA-5v5q-p7mc-784j

Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause…

MEDIUM 42CWE-119Published 2007-10-23 · Updated 2024-08-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: Partial · Partial · Partial
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

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."

Why it matters now

EPSS 0.06685 93rd 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 · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nortel:ip_softphone_2050::::::::	all versions	Vulnerable	Nortel

cpe:2.3:a:nortel:ip_softphone_2050:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Nortel

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2007-5636
2026-10-03 Alias added: GHSA-5v5q-p7mc-784j

References

Exploit 1

http://www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt

Advisory 1

3271

Other 3

TI-2004-01183 The Windows Animated Cursor (ANI) capability in Windows NT, Windows 2000 through SP4… CVSS 2.0MEDIUM 5.0
TI-2004-00776 Internet Explorer in Windows XP SP2, and other versions including 5.01 and 5.5, allows… CVSS 2.0MEDIUM 5.0
TI-2004-01197 The DHTML Edit Control (dhtmled.ocx) allows remote attackers to inject arbitrary web… CVSS 2.0MEDIUM 5.0
TI-2007-05420 The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile… CVSS 2.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences