Vulnerability · Published Feb 6, 2026 · Assigned by GitHub_M
CVE-2026-23741ast_coredumper running as root sources ast_debug_tools.conf from /etc/asterisk; potentially leading to privilege escalation
None 0.0
In plain English
A uncontrolled search path in asterisk from asterisk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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, the asterisk/contrib/scripts/ast_coredumper runs as root, as noted by the NOTES tag on line 689 of the ast_coredumper file. The script will source the contents of /etc/asterisk/ast_debug_tools.conf, which resides in a folder that is writeable by the asterisk user:group. Due to the /etc/asterisk/ast_debug_tools.conf file following bash semantics and it being loaded; an attacker with write permissions may add or modify the file such that when the root ast_coredumper is run; it would source and thereby execute arbitrary bash code found in the /etc/asterisk/ast_debug_tools.conf. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | asterisk | 1:22.8.2+dfsg+~cs6.15.60671435-1 | DEBIAN-CVE-2026-23741 |
| Ubuntu:22.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2026-23741 |
| Ubuntu:24.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2026-23741 |
| Ubuntu:25.10 | asterisk | no fix listed | UBUNTU-CVE-2026-23741 |
| Ubuntu:26.04:LTS | asterisk | no fix listed | UBUNTU-CVE-2026-23741 |
| Ubuntu:26.10 | asterisk | no fix listed | UBUNTU-CVE-2026-23741 |
Affected products (as reported)
Weakness: CWE-427 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N
References
- https://github.com/asterisk/asterisk/security/advisories/GHSA-rvch-3jmx-3jf3 x_refsource_CONFIRM