cve.bz

CVE-2021-20234

6.5 mediumEPSS 1.1%

Medium (6.5) in zeromq libzmq. EPSS 1.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWEs
CWE-401, CWE-400
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON