{"id":"CVE-2026-57192","published":"2026-10-27T22:17:27.567","lastModified":"2026-10-27T22:17:27.567","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, an authenticated attacker may cause a heap buffer overflow through an out-of-bounds write in the `Codec2` decoder caused by a `floor/ceil sample-count mismatch`. The `codec_codec2` module must be loaded and `Codec2` must be configured on the attacked endpoint. The attacker must pass SIP authentication by username/password or `source IP address matching`, establish a call using `Codec2`, and send carefully crafted `Codec2` audio packets. 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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-125","CWE-131","CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://github.com/asterisk/asterisk/commit/02e2d8d51efe1f811f2929224339cb1a35ffc079","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/4f5cad0611c67638a0a61cfedbe645045da8dd56","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/9b085d48fb66e90a0740ea59e26840421fd07acb","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/a0bc717b2261f4df7cdecc22b58a5fffbd1aa398","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/a2f1cc611f7d0f21faa03e8535009df3041c434c","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/aa40bc599a8e628859ef1c4fc944261423ceac0d","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/d4ccfd55ffd7cf6d73a6e5cde347a7464c301006","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/20.20.1","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/21.12.3","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/22.10.1","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/23.4.1","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3","tags":[]},{"url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-qf8j-jp7h-c5hx","tags":[]},{"url":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1","tags":[]}],"exploitRefs":[{"url":"https://github.com/asterisk/asterisk/commit/02e2d8d51efe1f811f2929224339cb1a35ffc079","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/4f5cad0611c67638a0a61cfedbe645045da8dd56","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/9b085d48fb66e90a0740ea59e26840421fd07acb","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/a0bc717b2261f4df7cdecc22b58a5fffbd1aa398","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/a2f1cc611f7d0f21faa03e8535009df3041c434c","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/aa40bc599a8e628859ef1c4fc944261423ceac0d","tags":[]},{"url":"https://github.com/asterisk/asterisk/commit/d4ccfd55ffd7cf6d73a6e5cde347a7464c301006","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/20.20.1","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/21.12.3","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/22.10.1","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/23.4.1","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11","tags":[]},{"url":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3","tags":[]},{"url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-qf8j-jp7h-c5hx","tags":[]},{"url":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1","tags":[]}],"hasPoc":true,"ai":null}