VulnerabilityModified
CVE-2021-41039
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.
HIGH 7.5EPSS 1.26%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.26% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1050
- Affected
- eclipse/mosquitto
- Source
- emo@eclipse.org
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=575314Exploit, Issue Tracking, Patch, Vendor Advisory
- https://www.debian.org/security/2023/dsa-5511
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=575314Exploit, Issue Tracking, Patch, Vendor Advisory
- https://www.debian.org/security/2023/dsa-5511
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.