Vulnerability Intelligence Report
CVE-2021-20236
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.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
EPSS Probability:1.60%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-120 ↗CWE-120->CWE-787
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| zeromq | zeromq | all |
| redhat | ceph_storage | 2.0 |
| redhat | enterprise_linux | 7.0 |
| fedoraproject | fedora | 33 |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.602%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Red Hat, Inc. · Vendor · USA |
| Reserved | 2020-12-17T00:00:00 |
| Published | 2021-05-28T10:42:19 |
| Last Updated | 2024-08-03T17:37:23 |
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