{"id":"CVE-2026-57199","aliases":[],"title":"Asterisk: Asterisk app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers","titleSource":"GitHub_M","descriptionSource":"GitHub_M","products":[{"vendor":"asterisk","name":"asterisk","platforms":[],"versions":[{"version":"< 20.20.1","status":"affected"},{"version":">= 21.0.0-pre1, < 21.12.3","status":"affected"},{"version":">= 22.0.0-pre1, < 22.10.1","status":"affected"},{"version":">= 23.0.0-pre1, < 23.4.1","status":"affected"}],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-57199"},{"vendor":"asterisk","name":"certified-asterisk","platforms":[],"versions":[{"version":"< 20.7-cert11","status":"affected"},{"version":">= 22.8-cert1-pre1, < 22.8-cert3","status":"affected"}],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-57199"}],"remediation":[],"description":"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22.8-cert3.","severity":"low","score":2.3,"published":"2026-10-27T21:52:42.436Z","modified":"2026-10-27T21:52:42.436Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/asterisk/asterisk/security/advisories/GHSA-q9fr-m7g8-6ph5","https://github.com/asterisk/asterisk/commit/15c66022dc441ec63d7bd5f53cf7f35db72964be","https://github.com/asterisk/asterisk/commit/38a2059eb77a91a6b6e76eeba5875c2b96027368","https://github.com/asterisk/asterisk/commit/59b74276f24ba104d859f3f05897c9b8d835a28a","https://github.com/asterisk/asterisk/commit/60f4ef3deac6b9af30519b46c13f103264038b82","https://github.com/asterisk/asterisk/commit/661d6a2fc5cc7744ab9d849ed3c73ae5066386df","https://github.com/asterisk/asterisk/commit/7048a3841df99e090b9d87246600373581629c98","https://github.com/asterisk/asterisk/commit/f46f63bd4d33665d336cf8b5998650b915222549","https://github.com/asterisk/asterisk/releases/tag/20.20.1","https://github.com/asterisk/asterisk/releases/tag/21.12.3","https://github.com/asterisk/asterisk/releases/tag/22.10.1","https://github.com/asterisk/asterisk/releases/tag/23.4.1","https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11","https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3","https://github.com/asterisk/asterisk/tree/24.0.0-pre1"],"sources":[{"name":"CVE","id":"CVE-2026-57199","modified":"2026-10-27T21:52:42.436Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-57199"}],"assessments":[{"source":"GitHub_M","vector":"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","score":2.3}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T14:30:35.755Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}