CVE-2026-57186

Asterisk: CVE-2022-37325 fix is absent from current chan_ooh323 Q.931 party-number parser

HIGH
7.5
CVSS Score
Published: October 27, 2026 at 09:21 PM UTC
Updated: October 28, 2026 at 05:18 PM UTC
2 products affected across 1 vendorAsteriskCertified Asterisk

Using asterisk by asterisk?

Get instant alerts when new vulnerabilities affect asterisk - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

21.0.0-pre1 ≤ v < 21.12.322.0.0-pre1 ≤ v < 22.10.123.0.0-pre1 ≤ v < 23.4.121.0.0-pre122.0.0-pre123.0.0-pre1
22.8-cert1-pre1 ≤ v < 22.8-cert322.8-cert1-pre1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-839

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card