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VulnerabilityPublished

CVE-2026-57186: asterisk · Numeric Range Comparison Without Minimum Check

Affects asteriskSource CVE Database V5

0

Mentioned vulnerabilities

Not known to be exploited · CVSS 7.5 High · fixed in 23.4.1 : patch asterisk soon.

Data as of 27 Oct 2026, 21:45 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 23.4.1, 22.10.1, 21.12.3 +1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade asterisk to 23.4.1, 22.10.1 or 21.12.3; certified-asterisk to 22.8-cert3.

Affected software

ProductAffectedFixed in
asteriskasteriskAffected
  • >=23.0.0-pre1 <23.4.1
Fixed in
  • 23.4.1
asteriskasteriskAffected
  • >=22.0.0-pre1 <22.10.1
Fixed in
  • 22.10.1
asteriskasteriskAffected
  • >=21.0.0-pre1 <21.12.3
Fixed in
  • 21.12.3
asteriskcertified-asteriskAffected
  • >=22.8-cert1-pre1 <22.8-cert3
Fixed in
  • 22.8-cert3

AI-suggested

Upgrade to Asterisk versions 21.12.3, 22.10.1, 23.4.1, or Certified Asterisk 22.8-cert3 where this issue is fixed. If the chan_ooh323 addon is not compiled or its port is not publicly reachable, the risk is mitigated by default. No additional vendor advisory indicates alternative mitigations.

Description

A vulnerability in the Asterisk telephony toolkit's chan_ooh323 channel driver allows malformed Q.931 elements in an OOH323 request to crash the system. This issue exists because a prior fix (CVE-2022-37325) was not forward-ported to versions after Asterisk 20. The vulnerability affects versions where chan_ooh323 is explicitly compiled and publicly reachable. Fixed versions include 21.12.3, 22.10.1, 23.4.1, and Certified Asterisk 22.8-cert3.

References

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