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.
Published: 2026-10-27
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 30 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 27 Oct 2026 20:30:00 +0000

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

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'}

Subscriptions

Asterisk Asterisk Certified Asterisk
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-30T20:21:55.599Z

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

Link: CVE-2026-57185

cve-icon Vulnrichment

Updated: 2026-10-30T20:21:52.188Z

cve-icon NVD

Status : Undergoing Analysis

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

Modified: 2026-10-30T21:16:58.377

Link: CVE-2026-57185

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T20:15:07Z

Weaknesses