{"id":"CVE-2026-57195","aliases":[],"title":"Asterisk: NULL Pointer Dereference in HTTP AMI Digest Authentication","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, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. 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":"high","score":7.5,"published":"2026-10-27T21:04:25.747Z","modified":"2026-10-27T21:04:25.747Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/asterisk/asterisk/security/advisories/GHSA-3rhj-hhw7-m6fw","https://github.com/asterisk/asterisk/commit/10c5b2efcacab03bf04a229f81cc24e76fe42c41","https://github.com/asterisk/asterisk/commit/362ef847e7e057b7626e476ddcfe7328ea314db4","https://github.com/asterisk/asterisk/commit/5d5d8d8ef7f16774820b1889ae73d8d2ab14af45","https://github.com/asterisk/asterisk/commit/87a1f43e4c465b885163665aa89172ed0f392663","https://github.com/asterisk/asterisk/commit/a1fcfdf9b91ed58cc8fb9da8d135da60bae7345d","https://github.com/asterisk/asterisk/commit/abba42c58fee2226a709583afdbeec75cf1dde8b","https://github.com/asterisk/asterisk/commit/fff89162cdd702e8a143701f138edd8dceab154f","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-2026-57195","modified":"2026-10-27T21:04:25.747Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-57195"}],"assessments":[{"source":"CNA","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}],"sourceAffected":[]}