https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2021-20236.htmlhttps://patchthecve.com/cve/CVE-2021-20236.htmlWed, 17 Jun 2026 03:33:31 +0000CRITICAL 9.8: A flaw was found in the ZeroMQ server in versions before 4.3.3. This flaw allows a malicious client to cause a stack buffer overflow on the server by sending crafted topic subscription requests and then unsubscribing. The highest threat from this vulnerability is to confidentiality, integrity, as wehttps://patchthecve.com/cve/CVE-2014-9721.htmlhttps://patchthecve.com/cve/CVE-2014-9721.htmlWed, 17 Jun 2026 00:18:52 +0000MEDIUM 4.3: libzmq before 4.0.6 and 4.1.x before 4.1.1 allows remote attackers to conduct downgrade attacks and bypass ZMTP v3 protocol security mechanisms via a ZMTP v2 or earlier header.https://patchthecve.com/cve/CVE-2014-7203.htmlhttps://patchthecve.com/cve/CVE-2014-7203.htmlWed, 17 Jun 2026 00:14:33 +0000MEDIUM 4.3: 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.https://patchthecve.com/cve/CVE-2014-7202.htmlhttps://patchthecve.com/cve/CVE-2014-7202.htmlWed, 17 Jun 2026 00:14:33 +0000MEDIUM 4.3: stream_engine.cpp in libzmq (aka ZeroMQ/C++)) 4.0.5 before 4.0.5 allows man-in-the-middle attackers to conduct downgrade attacks via a crafted connection request.