CVE-2021-41039
moderate-risk
Published 2021-12-01
In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-property properties could cause excessive CPU usage, leading to a loss of performance and possible denial of service.
Do I need to act?
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0.25% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
32
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
1/34 · Minimal
Exposure
5/34 · Minimal