All vulnerabilities
CVE-2026-57202GHSA-vrfp-mg3q-3959

Asterisk: ARI setChannelVar bypasses live_dangerously and permits FILE() writes

asterisk asterisk
Open in ThreatlineRecord JSON
CVSS
8.1High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published27 Oct 2026Updated 27 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

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 Asterisk REST Interface (ARI) attacker with read-only privileges may use setChannelVar to execute write dialplan functions, including FILE() writes, even when live_dangerously in asterisk.conf is set to no. The Asterisk HTTP web server must be enabled and reachable, and the attacker must already have valid read-only ARI credentials. HTTP is disabled by default and 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.

Text from CVE List

Affected versions 6

  • asteriskaffected: < 20.20.1CVE List
  • asteriskaffected: >= 21.0.0-pre1, < 21.12.3CVE List
  • asteriskaffected: >= 22.0.0-pre1, < 22.10.1CVE List
  • asteriskaffected: >= 23.0.0-pre1, < 23.4.1CVE List
  • certified-asteriskaffected: < 20.7-cert11CVE List
  • certified-asteriskaffected: >= 22.8-cert1-pre1, < 22.8-cert3CVE List

References 15