CVE-2021-20236
- Source
- https://cve.org/CVERecord?id=CVE-2021-20236
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20236.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-20236
- Aliases
-
- GHSA-qq65-x72m-9wr8
- Downstream
- Published
- 2021-05-28T11:15:07.933Z
- Modified
- 2026-07-18T03:41:41.882218068Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 well as system availability.
- Database specific
{ "unresolved_ranges": [ { "cpes": [ "cpe:2.3:a:zeromq:zeromq:*:*:*:*:*:*:*:*" ], "vendor_product": "zeromq:zeromq", "extracted_events": [ { "fixed": "4.3.3" } ], "source": "CPE_RANGE" }, { "cpes": [ "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "33" }, { "last_affected": "33" } ], "vendor_product": "fedoraproject:fedora", "source": "CPE_STRING" }, { "cpes": [ "cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "2.0" }, { "last_affected": "2.0" } ], "vendor_product": "redhat:ceph_storage", "source": "CPE_STRING" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "7.0" }, { "last_affected": "7.0" } ], "vendor_product": "redhat:enterprise_linux", "source": "CPE_STRING" } ] }- References