asterisk: Asterisk is an open source private branch exchange and telephony toolkit
CVE-2026-57192 is fixed in asterisk on 1 platform by DEBIAN-CVE-2026-57192 (version 1:22.10.1+dfsg+~cs6.17.60671434-1), released October 28, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| asterisk · Debian 14 | 1:22.10.1+dfsg+~cs6.17.60671434-1 | DEBIAN-CVE-2026-57192 | Oct 28, 2026 |
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