{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-57194","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-24T02:00:46.800Z","datePublished":"2026-10-27T16:52:47.225Z","dateUpdated":"2026-10-27T16:52:47.225Z"},"containers":{"cna":{"title":"Asterisk: chan_unistim DIALPAGE digit handling can overflow phone_number and crash Asterisk","problemTypes":[{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/asterisk/asterisk/security/advisories/GHSA-3g56-cgrh-95p5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-3g56-cgrh-95p5"},{"name":"https://github.com/asterisk/asterisk/commit/430f423c84e4e32a462d907632b66c9793236e96","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/430f423c84e4e32a462d907632b66c9793236e96"},{"name":"https://github.com/asterisk/asterisk/commit/6da8e10c210d8e014c27c67235252e1dfc794446","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/6da8e10c210d8e014c27c67235252e1dfc794446"},{"name":"https://github.com/asterisk/asterisk/commit/6f414ec771eaa3318a4b2d28f70fa387196ae283","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/6f414ec771eaa3318a4b2d28f70fa387196ae283"},{"name":"https://github.com/asterisk/asterisk/commit/ce6e2233599b76bc30c33b4816b15609c8ddc8b6","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/ce6e2233599b76bc30c33b4816b15609c8ddc8b6"},{"name":"https://github.com/asterisk/asterisk/commit/d803b5370b05f39a6241b2556eb9894b02148e6a","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/d803b5370b05f39a6241b2556eb9894b02148e6a"},{"name":"https://github.com/asterisk/asterisk/commit/fc3a1cb3c386c962bfca8cd9d533d1390d4ad933","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/fc3a1cb3c386c962bfca8cd9d533d1390d4ad933"},{"name":"https://github.com/asterisk/asterisk/commit/ff65e4b0867bee12cdcb3a6219b976ee7ee08963","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/commit/ff65e4b0867bee12cdcb3a6219b976ee7ee08963"},{"name":"https://github.com/asterisk/asterisk/releases/tag/20.20.1","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/20.20.1"},{"name":"https://github.com/asterisk/asterisk/releases/tag/21.12.3","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/21.12.3"},{"name":"https://github.com/asterisk/asterisk/releases/tag/22.10.1","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/22.10.1"},{"name":"https://github.com/asterisk/asterisk/releases/tag/23.4.1","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/23.4.1"},{"name":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"},{"name":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"},{"name":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1","tags":["x_refsource_MISC"],"url":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1"}],"affected":[{"vendor":"asterisk","product":"asterisk","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"}]},{"vendor":"asterisk","product":"certified-asterisk","versions":[{"version":"< 20.7-cert11","status":"affected"},{"version":">= 22.8-cert1-pre1, < 22.8-cert3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-27T16:52:47.225Z"},"descriptions":[{"lang":"en","value":"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, an out-of-bounds write in `chan_unistim` `DIALPAGE` digit handling can overflow the `phone_number` field and crash Asterisk when an attacker sends a carefully crafted incoming request packet. The `chan_unistim` module must be loaded and configured with a valid `UNISTIM UDP port` that the attacker can reach. The attacker must register as a configured `phone MAC`, or the deployment must have an equivalent `production/autoprovisioning` path that allows the client to reach the main page. 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."}],"source":{"advisory":"GHSA-3g56-cgrh-95p5","discovery":"UNKNOWN"}}}}