CVE-2007-2488: Asterisk

High severity, CVSS 10.0. EPSS: 4.3% chance of exploitation in the next 30 days.

The IAX2 channel driver (chan_iax2) in Asterisk before 20070504 does not properly null terminate data, which allows remote attackers to trigger loss of transmitted data, and possibly obtain sensitive information (memory contents) or cause a denial of service (application crash), by sending a frame that lacks a 0 byte.

Affected products

• Asterisk Asterisk: up to and including 1.4.4_2007-04-27

Published 2007-05-07. Last modified 2026-06-16.