CVE-2021-34432
7.5
HIGH
CVSS 3.1
EPSS 0.56%
Description
In Eclipse Mosquitto versions 2.07 and earlier, the server will crash if the client tries to send a PUBLISH packet with topic length = 0.
How to fix CVE-2021-34432
To remediate CVE-2021-34432, upgrade the affected package to a fixed version below.
- Alpine/mosquitto—upgrade to 1.6.8-r1 or later
- Debian/mosquitto—upgrade to 2.0.8-1 or later
Is CVE-2021-34432 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.6.8-r1
- from 0, < 2.0.8-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |