CVE-2026-57185 Asterisk: Buffer over-read in Asterisk PJSIP MWI body parser
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-57185?
CVE-2026-57185 is a medium-severity vulnerability in asterisk, published on 27 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-57185?
How do I fix CVE-2026-57185?
Upgrade to a fixed version.
Is CVE-2026-57185 being exploited?
There is no known exploitation of CVE-2026-57185 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-57185, GHSA-8jw3-ccr9-xrmf, UBUNTU-CVE-2026-57185.