CVE-2021-34431
MEDIUM
6.5
CVSS Score
Published: July 22, 2021 at 01:45 PM UTC
Updated: June 17, 2026 at 03:55 AM UTC
1 product affected across 1 vendorMosquitto
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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
Description
In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_CONFIRMMailing ListVendor Advisory
Source: [email protected]
https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-401
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