Vulnerability 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.
CVSS Score
NONE
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sangoma | Asterisk | < 20.18.2 |
| Sangoma | Certified Asterisk | <= 18.9 |
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-23741?
CVE-2026-23741 is a vulnerability with a CVSS score of 0.0 (NONE). 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, ...
How severe is CVE-2026-23741?
CVE-2026-23741 has been rated NONE with a CVSS base score of 0.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23741?
Check the references section above for vendor advisories and patch information. Affected products include: Sangoma Asterisk, Sangoma Certified Asterisk.