What is CVE-2026-57185?

CVE-2026-57185 is a medium-severity vulnerability in Asterisk, classified under Buffer Over-read. CVSS score: 6.5/10. Published 2026-10-27.

How severe is CVE-2026-57185?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Asterisk

CVE-2026-57185

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.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Asterisk — versions < 20.20.1, >= 21.0.0-pre1, < 21.12.3, >= 22.0.0-pre1, < 22.10.1
Asterisk Certified-Asterisk — versions < 20.7-cert11, >= 22.8-cert1-pre1, < 22.8-cert3

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57185?: CVE-2026-57185 is a medium-severity vulnerability in Asterisk, classified under Buffer Over-read. CVSS score: 6.5/10. Published 2026-10-27.
How severe is CVE-2026-57185?: Medium severity. CVSS v3 base score is 6.5 out of 10.