7.5

CVE-2023-5632: eclipse mosquitto Excessive Iteration

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2023-5632DEBIAN-CVE-2023-5632
Published 18-10-2023Last modified 13-09-2024
Open JSON

Vulnerability summary

CVE-2023-5632 is a high (CVSS 7.5) Excessive Iteration vulnerability in eclipse mosquitto. EPSS estimates a 0.80% chance of exploitation in the next 30 days, higher than 55.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.80%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 18-10-2023
    PublishedVulnerability first disclosed.
  2. 13-09-2024
    Last modifiedVulnerability information updated.

Description

In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.80%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

+0.11 pp

From 0.69% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.80%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • mosquitto< 2.0.7-1
Eclipse1 product
Ubuntu1 product
  • mosquitto< 2.0.11-1ubuntu1

3 vendors · 3 products

References

5 links