CVE-2014-7203: Zeromq

Medium severity, CVSS 4.3. EPSS: 1.9% chance of exploitation in the next 30 days.

libzmq (aka ZeroMQ/C++) 4.0.x before 4.0.5 does not ensure that nonces are unique, which allows man-in-the-middle attackers to conduct replay attacks via unspecified vectors.

Affected products

• Zeromq Zeromq: version 4.0.0 only; version 4.0.1 only; version 4.0.2 only; version 4.0.3 only; version 4.0.4 only

Published 2014-10-08. Last modified 2026-06-17.