CVE-2026-57192
Severity not reportedAsterisk is an open source private branch exchange and telephony toolkit.
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.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/asterisk/asterisk/commit/02e2d8d51efe1f811f2929224339cb1a35ffc079 security-advisories@github.com
- https://github.com/asterisk/asterisk/commit/4f5cad0611c67638a0a61cfedbe645045da8dd56 security-advisories@github.com
- https://github.com/asterisk/asterisk/commit/9b085d48fb66e90a0740ea59e26840421fd07acb security-advisories@github.com
- https://github.com/asterisk/asterisk/commit/a0bc717b2261f4df7cdecc22b58a5fffbd1aa398 security-advisories@github.com
- https://github.com/asterisk/asterisk/commit/a2f1cc611f7d0f21faa03e8535009df3041c434c security-advisories@github.com
- https://github.com/asterisk/asterisk/commit/aa40bc599a8e628859ef1c4fc944261423ceac0d security-advisories@github.com
- https://github.com/asterisk/asterisk/commit/d4ccfd55ffd7cf6d73a6e5cde347a7464c301006 security-advisories@github.com
- https://github.com/asterisk/asterisk/releases/tag/20.20.1 security-advisories@github.com
- https://github.com/asterisk/asterisk/releases/tag/21.12.3 security-advisories@github.com
- https://github.com/asterisk/asterisk/releases/tag/22.10.1 security-advisories@github.com
- https://github.com/asterisk/asterisk/releases/tag/23.4.1 security-advisories@github.com
- https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11 security-advisories@github.com
- https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3 security-advisories@github.com
- https://github.com/asterisk/asterisk/security/advisories/GHSA-qf8j-jp7h-c5hx security-advisories@github.com
- https://github.com/asterisk/asterisk/tree/24.0.0-pre1 security-advisories@github.com