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CVE-2026-57189 Details

Description

Asterisk is an open source private branch exchange and telephony toolkit. In affected deployments, an authenticated attacker may cause a `T.140 RED` out-of-bounds write during `generation accumulation` using carefully crafted packets, potentially allowing remote code execution or causing Asterisk to crash. The `chan_sip` channel driver must be installed and configured, and its `textsupport` option must be enabled; `textsupport` defaults to no. `The chan_sip driver was deprecated in Asterisk 20 and completely removed in all later versions.` Repository comparisons verify patch containment in Asterisk 20.20.1, 21.12.3, 22.10.1 and 23.4.1, and Certified Asterisk 20.7-cert11 and 22.8-cert3. The affected release-track scope remains unresolved: structured metadata includes later release tracks even though the advisory says the required `chan_sip` driver was removed there.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/asterisk/asterisk/commit/0601c33d4edf8c8f221de91cead59460fb1e7180	[email protected]
https://github.com/asterisk/asterisk/commit/111487298a954a029daae941eac423f0609b1261	[email protected]
https://github.com/asterisk/asterisk/commit/536218a86b797996e8e8844deacc8207de373701	[email protected]
https://github.com/asterisk/asterisk/commit/a89b61d7c756f816c7fa5327ead9e889f1531202	[email protected]
https://github.com/asterisk/asterisk/commit/eaa108c68a32c080d7a168ef1d8bf784d5d830f4	[email protected]
https://github.com/asterisk/asterisk/commit/eef894282be203cb9e6d8e9692e9c360a0b569b4	[email protected]
https://github.com/asterisk/asterisk/commit/fde69a1f3ff17f507a1578ae27b528f43ceb5efd	[email protected]
https://github.com/asterisk/asterisk/releases/tag/20.20.1	[email protected]
https://github.com/asterisk/asterisk/releases/tag/21.12.3	[email protected]
https://github.com/asterisk/asterisk/releases/tag/22.10.1	[email protected]
https://github.com/asterisk/asterisk/releases/tag/23.4.1	[email protected]
https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11	[email protected]
https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3	[email protected]
https://github.com/asterisk/asterisk/security/advisories/GHSA-j2mm-57pq-jh94	[email protected]
https://github.com/asterisk/asterisk/tree/24.0.0-pre1	[email protected]

see all 15 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 28, 2026	CVE Modified	CISA-ADP
Oct 27, 2026	New CVE Received	[email protected]