CVE-2026-57185
Asterisk: Buffer over-read in Asterisk PJSIP MWI body parser
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.
INFO
Published Date :
Oct. 27, 2026, 5:17 p.m.
Last Modified :
Oct. 27, 2026, 5:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Asterisk to version 20.20.1 or later.
- Apply Certified Asterisk 20.7-cert11 or later.
- Update Asterisk to version 21.12.3 or later.
- Update Asterisk to version 22.10.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-57185.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-57185 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-57185
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-57185 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-57185 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Oct. 27, 2026
Action Type Old Value New Value 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-126 Added CWE CWE-170 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/57xxx/CVE-2026-57185.json">CVE-2026-57185</a> Added Reference https://github.com/asterisk/asterisk/commit/07aec894a1fdfa7fa989d3ab40fdf0dcda8005bb Added Reference https://github.com/asterisk/asterisk/commit/1039bed76fa3248f58b6880e4b3f1421ef98b01f Added Reference https://github.com/asterisk/asterisk/commit/1b2d99d8eb9206d37fd47115996f67fd28bd056f Added Reference https://github.com/asterisk/asterisk/commit/3100a0d331affbf0995b8c57aaddb31cf3971f6e Added Reference https://github.com/asterisk/asterisk/commit/57ce484a45b098de417f19265c95c64497782e36 Added Reference https://github.com/asterisk/asterisk/commit/919f2ffda03329c9014bedcb3c7789d38660c9ed Added Reference https://github.com/asterisk/asterisk/commit/dafff9fb60281817225f1ce6371a5aa2fbb967a4 Added Reference https://github.com/asterisk/asterisk/releases/tag/20.20.1 Added Reference https://github.com/asterisk/asterisk/releases/tag/21.12.3 Added Reference https://github.com/asterisk/asterisk/releases/tag/22.10.1 Added Reference https://github.com/asterisk/asterisk/releases/tag/23.4.1 Added Reference https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11 Added Reference https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3 Added Reference https://github.com/asterisk/asterisk/security/advisories/GHSA-8jw3-ccr9-xrmf Added Reference https://github.com/asterisk/asterisk/tree/24.0.0-pre1