CVE-2021-20234
MEDIUM
6.5
CVSS Score
Published: April 1, 2021 at 01:46 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
2 products affected across 1 vendorLibzmqZeromq
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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
Description
An uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compromised servers to crash. The highest threat from this vulnerability is to system availability.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1921972x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://github.com/zeromq/libzmq/security/advisories/GHSA-wfr2-29gj-5w87CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-400CWE-401
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