Vulnerability in asterisk

[ Description ]Official 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, `ast_loggrabber` executes a `Python script` from the world-writable `/tmp` directory. An attacker already authorized to open a shell session on the Asterisk server may place a malicious script there and gain elevated privileges or execute code when an administrator runs `ast_loggrabber` as a user with elevated privileges. 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund27 Oct 2026WID-SEC-2026-4205

  Asterisk: Multiple vulnerabilities Translated from German

  CVE-2026-57195CVE-2026-57198CVE-2026-57203+2 more CVEs

[ References ]References

• github.com/asterisk/asterisk/commit/022407ec47adebe27b7ec8bcf5626e5a02fe1551
• github.com/asterisk/asterisk/commit/a51c4e3d6bccce4bc4226c43e78952573a62f165
• github.com/asterisk/asterisk/commit/ba8e5bdecd5280fc0ab230df59e41ea21b3a052f
• github.com/asterisk/asterisk/commit/bd63fe121d0e86867863bd98b5771e592273b035
• github.com/asterisk/asterisk/commit/c0fc2ae54cb6289a48a80333432f5fdf5a40c7de
• github.com/asterisk/asterisk/commit/f18ac4c964781f671e400342790bf40679698067
• github.com/asterisk/asterisk/releases/tag/20.20.1
• github.com/asterisk/asterisk/releases/tag/21.12.3
• github.com/asterisk/asterisk/releases/tag/22.10.1
• github.com/asterisk/asterisk/releases/tag/23.4.1
• github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11
• github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3
• github.com/asterisk/asterisk/security/advisories/GHSA-xgj6-2gc5-5x9c
• github.com/asterisk/asterisk/tree/24.0.0-pre1