What is CVE-2026-57195?

CVE-2026-57195 is a high-severity vulnerability in Asterisk, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-10-27.

How severe is CVE-2026-57195?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Asterisk

CVE-2026-57195

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, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. 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 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/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)

CWE-476 — NULL Pointer Dereference

References

Frequently asked questions

What is CVE-2026-57195?: CVE-2026-57195 is a high-severity vulnerability in Asterisk, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-10-27.
How severe is CVE-2026-57195?: High severity. CVSS v3 base score is 7.5 out of 10.