CVE-2026-57199lowCWE-787

CVE-2026-57199: low-severity vulnerability in asterisk

Asterisk: Asterisk app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers

Published · Updated

Follow this CVE+ Monitor asterisk+ Monitor certified-asterisk

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

8Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 2.3epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
asterisk · asteriskasterisk · certified-asterisk
Related CVEs — asterisk

In the same product, most dangerous first.

CVE-2023-49294MEDIUMAsterisk Path Traversal vulnerabilityEPSS 45.3%CVE-2023-49786HIGHAsterisk susceptible to Denial of Service via DTLS Hello packets during call initiationEPSS 5.3%CVE-2024-42365HIGHAsterisk allows `Write=originate` as sufficient permissions for code execution / `System()` dialplanEPSS 4.7%CVE-2026-57193MEDIUMAsterisk: LDAP Filter Injection in res_config_ldap via SIP Username (Unauthenticated Information Disclosure)EPSS 2.0%CVE-2009-3723—CVE-2009-3723EPSS 1.2%CVE-2023-37457HIGHAsterisk's PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'update'EPSS 1.1%