CVE-2021-20234
MEDIUM6.5EPSS 0.16%zeromq3 - security update
Published: 4/1/2021Modified: 4/28/2026
Also known as:DEBIAN-CVE-2021-20234
Description
An uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compromised servers to crash. The highest threat from this vulnerability is to system availability.
Affected packages (2)
- Debian/zeromq3from 0, < 4.3.3-1
- Debian/zeromq3from 0, < 4.2.1-4+deb9u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |