Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2026-23741

Severity CVSS v4.0:
Pending analysis
Type:
CWE-427 Uncontrolled Search Path Element
Publication date:
06/02/2026
Last modified:
18/02/2026

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.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 0.00 NONE
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): None

Base Score 3.x
0.00
Severity 3.x
NONE

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 20.18.2 (excluding)
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 21.0.0 (including) 21.12.1 (excluding)
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 22.0.0 (including) 22.8.2 (excluding)
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 23.0.0 (including) 23.2.2 (excluding)
cpe:2.3:a:sangoma:certified_asterisk:*:*:*:*:*:*:*:* 18.9 (including)
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert4:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert5:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert6:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert7:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:20.7:cert8:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools