Description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when ast_coredumper writes its gdb init and output files to a directory that is world-writable (for example /tmp), an attacker with write permission(which is all users on a linux system) to that directory can cause root to execute arbitrary commands or overwrite arbitrary files by controlling the gdb init file and output paths. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.

INFO

Published Date :

2026-02-06T16:43:41.330Z

Last Modified :

2026-02-06T19:11:55.655Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-23740 vulnerability.

Vendors Products
Asterisk
  • Asterisk
Sangoma
  • Asterisk
  • Certified Asterisk
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23740.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact