Incorrect default permissions in Asterisk Open Source and Certified Asterisk - CVE-2026-23741

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Main Vulnerability Database Vulnerabilities #VU122443

Incorrect default permissions in Asterisk Open Source and Certified Asterisk - CVE-2026-23741

Published: February 6, 2026


Vulnerability identifier: #VU122443
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23741
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Digium (Linux Support Services)
Affected software:
Asterisk Open Source
Certified Asterisk

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for the "/etc/asterisk/ast_debug_tools.conf" file, which is writable by the asterisk user:group and is used by the "asterisk/contrib/scripts/ast_coredumper". A local user can modify the file and execute arbitrary OS commands as root.


How to mitigate CVE-2026-23741

Install updates from vendor's website.

Sources