Asterisk: Out-of-Bounds Read in Q.931 Information Element Parser (H.323 Addon)

Summary

CVE	CVE-2026-57184
State	PUBLISHED
Assigner	GitHub_M
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-10-26 20:17:56 UTC
Updated	2026-10-26 20:17:56 UTC
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.

Risk And Classification

Primary CVSS: v4.0 6.3 MEDIUM from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-125 | CWE-125 CWE-125: Out-of-bounds Read

Version	Source	Type	Score	Severity	Vector
4.0	[email protected]	Secondary	6.3	MEDIUM	`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/E:X/C...`
4.0	CNA	DECLARED	6.3	MEDIUM	`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`

CVSS v4.0 Breakdown

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

Present

Privileges Required

None

User Interaction

None

Confidentiality

None

Integrity

None

Availability

Low

Sub Conf.

None

Sub Integrity

None

Sub Availability

None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Asterisk	Asterisk	affected < 20.20.1	Not specified
CNA	Asterisk	Asterisk	affected >= 21.0.0-pre1, < 21.12.3	Not specified
CNA	Asterisk	Asterisk	affected >= 22.0.0-pre1, < 22.10.1	Not specified
CNA	Asterisk	Asterisk	affected >= 23.0.0-pre1, < 23.4.1	Not specified
CNA	Asterisk	Certified-asterisk	affected < 20.7-cert11	Not specified
CNA	Asterisk	Certified-asterisk	affected >= 22.8-cert1-pre1, < 22.8-cert3	Not specified

References

Reference	Source	Link	Tags
github.com/asterisk/asterisk/releases/tag/22.10.1	[email protected]	github.com
github.com/asterisk/asterisk/commit/00ebdfbc89ed160ae45a2fc0f67f36e36dae...	[email protected]	github.com
github.com/asterisk/asterisk/releases/tag/20.20.1	[email protected]	github.com
github.com/asterisk/asterisk/commit/6dba027f8aea35bf3bbd89371a0cf516b13f...	[email protected]	github.com
github.com/asterisk/asterisk/commit/b1284510421a29c72fc4e9a31e4b1e0666a0...	[email protected]	github.com
github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11	[email protected]	github.com
github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3	[email protected]	github.com
github.com/asterisk/asterisk/security/advisories/GHSA-746q-794h-cc7f	[email protected]	github.com
github.com/asterisk/asterisk/releases/tag/23.4.1	[email protected]	github.com
github.com/asterisk/asterisk/commit/ad4a2b3e944afd5a8e9a550bd5f62aeac868...	[email protected]	github.com
github.com/asterisk/asterisk/releases/tag/21.12.3	[email protected]	github.com
github.com/asterisk/asterisk/tree/24.0.0-pre1	[email protected]	github.com
github.com/asterisk/asterisk/commit/437d17fb13503fe9b4e72c35396f0c250d30...	[email protected]	github.com
github.com/asterisk/asterisk/commit/9c776e348374a72589cf27f635cddef45a2a...	[email protected]	github.com
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

There are currently no legacy QID mappings associated with this CVE.