CVE-2026-57195

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.

• CWE-476

• 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/security/advisories/GHSA-3rhj-hhw7-m6fw
• https://github.com/asterisk/asterisk/tree/24.0.0-pre1

Published

Oct 27, 2026

Last Modified

Nov 2, 2026

Status

Undergoing Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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