CVE-2020-36400

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Source
https://cve.org/CVERecord?id=CVE-2020-36400
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36400.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-36400
Published
2021-07-01T03:15:07.787Z
Modified
2026-04-11T13:53:14.435045Z
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

ZeroMQ libzmq 4.3.3 has a heap-based buffer overflow in zmq::tcp_read, a different vulnerability than CVE-2021-20235.

References

Affected packages

Git / github.com/zeromq/libzmq

Affected ranges

Type
GIT
Repo
https://github.com/zeromq/libzmq
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
04f5bbedee58c538934374dc45182d8fc5926fa3
Fixed
397ac80850bf8d010fae23dd215db0ee2c677306
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "4.3.3"
        }
    ]
}

Affected versions

v3.*
v3.1.0
v4.*
v4.2.0
v4.2.0-rc1
v4.2.1
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.3.0
v4.3.1
v4.3.2
v4.3.3

Database specific

vanir_signatures_modified 
"2026-04-11T13:53:14Z"
vanir_signatures 
[
    {
        "id": "CVE-2020-36400-b464be19",
        "target": {
            "file": "src/decoder_allocators.hpp"
        },
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "126113845745360430300090460976483088041",
                "119863922550594390560943282416311283014",
                "269340178266113695268704476110307561434",
                "141113841675974607008436660744748631403"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/zeromq/libzmq/commit/397ac80850bf8d010fae23dd215db0ee2c677306",
        "signature_version": "v1"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36400.json"