Live › vulnerability › CVE-2026-57199
Go to dashboardAsterisk's app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers without enough bounds checks. An attacker who can feed data into the SMS dialplan application can corrupt memory or crash Asterisk.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-27 22:29 UTC. All times on this page are UTC.
Only systems that explicitly use the SMS dialplan application, typically for routing calls to or from analog devices, are exposed. The administrator must also not have validated the data passed to that application. Systems that do not use the SMS application can skip it.
No product ranges from the sources yet.
SMS application (for example with grep -rn "SMS(" /etc/asterisk/)asterisk -rx "core show version"20.20.1, 21.12.3, 22.10.1 or 23.4.120.7-cert11 or 22.8-cert3SMS dialplan applicationEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers without sufficient bounds checks, allowing an attacker to corrupt memory or crash Asterisk. The administrator must explicitly use the SMS dialplan application, which is useful when routing calls to or from analog devices, and must not have ensured that data passed to the application is valid. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
This page as .md · .json · in your agent: get_signal("CVE-2026-57199")
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