CVE-2022-42705

MEDIUM
6.5
CVSS Score
Published: December 5, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 05:05 AM UTC
2 products affected across 1 vendorAsteriskCertified Asterisk

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

16.0.0 ≤ v < 16.29.118.14.0 ≤ v < 18.15.119.6.0 ≤ v < 19.7.120.0.0
Affected range stops below 16.29.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 18.15.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 19.7.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card