CVE-2018-19278: Digium Asterisk

High severity, CVSS 7.5. EPSS: 3.6% chance of exploitation in the next 30 days.

Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length.

Affected products

• Digium Asterisk: version 15.0.0 only; version 15.1.0 only; version 15.1.2 only; version 15.1.3 only; version 15.1.4 only; version 15.1.5 only; …

Published 2018-11-14. Last modified 2026-06-17.