CVE-2026-57186
Published:October 27, 2026
Updated:October 28, 2026
Asterisk is an open source private branch exchange and telephony toolkit. From 21.0.0-pre1 until Asterisk 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3, the "chan_ooh323" "Q.931 party-number parser" lacks the "CVE-2022-37325" fix because that fix was never forward-ported from Asterisk 20 to later versions. Malformed Q.931 elements in an "OOH323 request" can therefore crash Asterisk. This issue affects Asterisk versions greater than 20. The "chan_ooh323" addon channel driver must be explicitly compiled and installed, which is not the default, and its port must be publicly reachable. This issue is fixed in Asterisk 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3.
Affected Packages
https://github.com/asterisk/asterisk.git (GITHUB):
Affected version(s) >=certified-22.8-cert1-rc1 <certified-22.8-cert3Fix Suggestion:
Update to version certified-22.8-cert3https://github.com/asterisk/asterisk.git (GITHUB):
Affected version(s) >=22.0.0-rc1 <22.10.1Fix Suggestion:
Update to version 22.10.1https://github.com/asterisk/asterisk.git (GITHUB):
Affected version(s) >=21.0.0-rc1 <21.12.3Fix Suggestion:
Update to version 21.12.3https://github.com/asterisk/asterisk.git (GITHUB):
Affected version(s) >=23.0.0-rc1 <23.4.1Fix Suggestion:
Update to version 23.4.1Related Resources (11)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Numeric Range Comparison Without Minimum Check