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Fencer Vulns
high 7.5

CVE-2017-7654 json

In Eclipse Mosquitto 1.4.15 and earlier, a Memory Leak vulnerability was found within the Mosquitto Broker.

published 2018-06-05 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16659

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

In Eclipse Mosquitto 1.4.15 and earlier, a Memory Leak vulnerability was found within the Mosquitto Broker. Unauthenticated clients can send crafted CONNECT packets which could cause a denial of service in the Mosquitto Broker.

Patch / fix

  • mosquitto Debian 14, Debian 13, Debian 12 1.5.4-1

debian advisories DEBIAN-CVE-2017-7654

  • mosquitto Ubuntu 16.04 LTS 1.4.8-1ubuntu0.16.04.7
  • mosquitto Ubuntu 18.04 LTS 1.4.15-2ubuntu0.18.04.3

ubuntu advisories UBUNTU-CVE-2017-7654

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7654 updated cvss 7.5

mosquitto: Memory leak allows unauthenticated clients to send crafted CONNECT packets causing a denial of service

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.18% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • The Eclipse Foundation Eclipse Mosquitto

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime
  • CWE-772 Missing Release of Resource after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.