Skip to content
Fencer Vulns
medium 6.5

CVE-2026-57185 json

Asterisk: Buffer over-read in Asterisk PJSIP MWI body parser

published 2026-10-27 12 d ago modified 2026-10-30 9 d ago also EUVD-2026-111103

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits
0
none known

Summary

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.

Patch / fix

  • digium certified_asterisk 20.7-cert11, 20.20.1, 21.12.3, 22.8-cert3, 22.10.1, 23.4.1
  • sangoma certified_asterisk 20.7-cert11, 20.20.1, 21.12.3, 22.8-cert3, 22.10.1, 23.4.1
  • digium asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1
  • asterisk open_source 20.20.1, 21.12.3, 22.10.1, 23.4.1
  • asterisk certified_asterisk 20.7-cert11, 20.20.1, 21.12.3, 22.8-cert3, 22.10.1, 23.4.1
  • asterisk Debian 14 1:22.10.1+dfsg+~cs6.17.60671434-1

debian advisories DEBIAN-CVE-2026-57185

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-57185 updated cvss 6.5

asterisk: Asterisk: Denial of Service via crafted SIP NOTIFY request

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 d ago

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • asterisk asterisk
  • asterisk certified-asterisk

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.