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, an authenticated attacker may crash Asterisk through a buffer over-read in the `PJSIP MWI body parser` by sending a carefully crafted `SIP NOTIFY` request. The attacker must pass SIP authentication using either a username/password or `source IP address matching`. 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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

No data.

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/07aec894a1fdfa7fa989d3ab40fdf0dcda8005bb cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/1039bed76fa3248f58b6880e4b3f1421ef98b01f cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/1b2d99d8eb9206d37fd47115996f67fd28bd056f cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/3100a0d331affbf0995b8c57aaddb31cf3971f6e cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/57ce484a45b098de417f19265c95c64497782e36 cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/919f2ffda03329c9014bedcb3c7789d38660c9ed cve-icon cve-icon
https://github.com/asterisk/asterisk/commit/dafff9fb60281817225f1ce6371a5aa2fbb967a4 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-8jw3-ccr9-xrmf cve-icon cve-icon
https://github.com/asterisk/asterisk/tree/24.0.0-pre1 cve-icon cve-icon
History

Tue, 27 Oct 2026 17:00:00 +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, an authenticated attacker may crash Asterisk through a buffer over-read in the `PJSIP MWI body parser` by sending a carefully crafted `SIP NOTIFY` request. The attacker must pass SIP authentication using either a username/password or `source IP address matching`. 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: Buffer over-read in Asterisk PJSIP MWI body parser
Weaknesses CWE-126
CWE-170
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-27T16:40:27.615Z

Reserved: 2026-06-24T01:47:55.287Z

Link: CVE-2026-57185

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-27T17:17:01.267

Modified: 2026-10-27T17:17:01.267

Link: CVE-2026-57185

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses