{"affected":[{"product":"asterisk","source":"CNA: GitHub_M","vendor":"asterisk","versions":[{"status":"affected","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"}]},{"product":"certified-asterisk","source":"CNA: GitHub_M","vendor":"asterisk","versions":[{"status":"affected","version":"< 20.7-cert11"},{"status":"affected","version":">= 22.8-cert1-pre1, < 22.8-cert3"}]}],"cveId":"CVE-2026-57199","cwes":["CWE-787"],"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.","epss":{"date":"2026-11-03","percentile":0.41565,"score":0.00481},"exploits":[],"kev":null,"metrics":[{"score":2.3,"severity":"low","source":"CNA: 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","version":"4.0"}],"modifiedAt":1793714323338,"publishedAt":1793137962436,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-q9fr-m7g8-6ph5"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/15c66022dc441ec63d7bd5f53cf7f35db72964be"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/38a2059eb77a91a6b6e76eeba5875c2b96027368"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/59b74276f24ba104d859f3f05897c9b8d835a28a"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/60f4ef3deac6b9af30519b46c13f103264038b82"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/661d6a2fc5cc7744ab9d849ed3c73ae5066386df"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/7048a3841df99e090b9d87246600373581629c98"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/f46f63bd4d33665d336cf8b5998650b915222549"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/20.20.1"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/21.12.3"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/22.10.1"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/23.4.1"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1"}],"remediation":[],"revision":"07e7594f685bff559e48ee7d123995f080da4638928a5cc63e592fbcfd5963c9","sources":[{"modifiedAt":1793714323338,"name":"CNA: GitHub_M","retrievedAt":1793714984805,"url":"https://www.cve.org/CVERecord?id=CVE-2026-57199"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793718620464,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-57199"}],"ssvc":{"assessedAt":1793714214881,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Asterisk: Asterisk app_sms.c copies externally controlled SMS lengths into fixed in-struct buffers","updatedAt":1793718620464}