Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, insufficient bounds checking in the `chan_ooh323` `Q.931` `information-element parser` permits an `out-of-bounds read` that may allow an unauthenticated attacker to crash Asterisk using carefully crafted `setup packets`. 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 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0056.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
asterisk asterisk affected
Version Status Constraints
< 20.20.1 affected —
>= 21.0.0-pre1, < 21.12.3 affected —
>= 22.0.0-pre1, < 22.10.1 affected —
>= 23.0.0-pre1, < 23.4.1 affected —
asterisk certified-asterisk affected
Version Status Constraints
< 20.7-cert11 affected —
>= 22.8-cert1-pre1, < 22.8-cert3 affected —

No data.

No data.

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Vendors Products
Asterisk Subscribe
Asterisk Subscribe
Certified Asterisk Subscribe

Project Subscriptions

Vendors Products
Asterisk Subscribe
Asterisk Subscribe
Certified Asterisk Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/asterisk/asterisk/commit/00ebdfbc89ed160ae45a2fc0f67f36e36dae48ee cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/437d17fb13503fe9b4e72c35396f0c250d30b0f0 cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/6dba027f8aea35bf3bbd89371a0cf516b13f8588 cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/9c776e348374a72589cf27f635cddef45a2a2b90 cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/ad4a2b3e944afd5a8e9a550bd5f62aeac8680711 cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/b1284510421a29c72fc4e9a31e4b1e0666a0144f cve-icon cve-icon
https://github.com/asterisk/asterisk/releases/tag/20.20.1 cve-icon cve-icon
https://github.com/asterisk/asterisk/releases/tag/21.12.3 cve-icon cve-icon
https://github.com/asterisk/asterisk/releases/tag/22.10.1 cve-icon cve-icon
https://github.com/asterisk/asterisk/releases/tag/23.4.1 cve-icon cve-icon
https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11 cve-icon cve-icon
https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3 cve-icon cve-icon
https://github.com/asterisk/asterisk/security/advisories/GHSA-746q-794h-cc7f cve-icon cve-icon
https://github.com/asterisk/asterisk/tree/24.0.0-pre1 cve-icon cve-icon
History

Thu, 29 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
First Time appeared Asterisk
Asterisk asterisk
Asterisk certified Asterisk
Vendors & Products Asterisk
Asterisk asterisk
Asterisk certified Asterisk

Mon, 26 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
Description Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, insufficient bounds checking in the `chan_ooh323` `Q.931` `information-element parser` permits an `out-of-bounds read` that may allow an unauthenticated attacker to crash Asterisk using carefully crafted `setup packets`. 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 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Title Asterisk: Out-of-Bounds Read in Q.931 Information Element Parser (H.323 Addon)
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-29T01:52:01.081Z

Reserved: 2026-06-24T01:47:55.286Z

Link: CVE-2026-57184

cve-icon Vulnrichment

Updated: 2026-10-29T01:43:23.407Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-26T20:17:56.517

Modified: 2026-10-29T02:16:52.357

Link: CVE-2026-57184

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T01:30:16Z

Weaknesses