What is CVE-2017-7655?

CVE-2017-7655 is a high-severity vulnerability in Eclipse Mosquitto, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2019-03-27.

How severe is CVE-2017-7655?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Eclipse Mosquitto

CVE-2017-7655

In Eclipse Mosquitto version from 1.0 to 1.4.15, a Null Dereference vulnerability was found in the Mosquitto library which could lead to crashes for those applications using the library.

Published 2019-03-27 · last modified 2026-06-17.

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: 0.018 (77.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Eclipse Mosquitto
The Eclipse Foundation Mosquitto — versions 1.0, unspecified
Debian Linux — versions 8.0, 9.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

bugs.eclipse.org/bugs/show_bug.cgi (Issue Tracking, Vendor Advisory)
lists.debian.org/debian-lts-announce/2019/10/msg00035.html (mailing-list, Mailing List, Third Party Advisory)
lists.debian.org/debian-lts-announce/2021/10/msg00022.html (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2017-7655?: CVE-2017-7655 is a high-severity vulnerability in Eclipse Mosquitto, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2019-03-27.
How severe is CVE-2017-7655?: High severity. CVSS v3 base score is 7.5 out of 10.