CVE-2004-1940: Wirlab Kphone

Medium severity, CVSS 5.0. EPSS: 4.1% chance of exploitation in the next 30 days.

sipclient.cpp in KPhone 4.0.1 and earlier allows remote attackers to cause a denial of service (crash) via a STUN response packet with a large attrLen value that causes an out-of-bounds read.

Affected products

• Wirlab Kphone: up to and including 4.0.1

Published 2004-12-31. Last modified 2026-06-16.