Vulnerability in Eclipse Mosquitto
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.014 (71.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.014 · change: +0.001
Affected products
- Eclipse Mosquitto
- The Eclipse Foundation Mosquitto — versions 1.6, unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.eclipse.org/bugs/show_bug.cgi (Exploit, Patch, Issue Tracking, Vendor Advisory)
- www.debian.org/security/2023/dsa-5511 (vendor-advisory)
Frequently asked questions
- What is CVE-2021-41039?
- CVE-2021-41039 is a high-severity vulnerability in Eclipse Mosquitto, classified under CWE-1050. CVSS score: 7.5/10. Published 2021-12-01.
- How severe is CVE-2021-41039?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-41039 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.