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Fencer Vulns
medium 5.5

CVE-2017-9868 json

In Mosquitto through 1.4.12, mosquitto.db (aka the persistence file) is world readable, which allows local users to obtain sensitive MQTT t…

published 2017-06-25 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-18778

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

In Mosquitto through 1.4.12, mosquitto.db (aka the persistence file) is world readable, which allows local users to obtain sensitive MQTT topic information.

Patch / fix

  • mosquitto Debian 14, Debian 13, Debian 12 1.4.14-1

debian advisories DEBIAN-CVE-2017-9868

  • mosquitto Ubuntu 14.04 LTS 0.15-2ubuntu1.2
  • mosquitto Ubuntu 16.04 LTS 1.4.8-1ubuntu0.16.04.2

ubuntu advisories UBUNTU-CVE-2017-9868

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

  • mosquitto Alpine 3.24, Alpine 3.23, Alpine 3.22 +15 more 1.4.13-r0
  • mosquitto Alpine 3.6, Alpine 3.5 1.4.15-r0

alpine advisories ALPINE-CVE-2017-9868

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mosquitto Arch Linux 1.4.14-1

arch linux advisories AVG-353

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-2017-9868 updated cvss 5.5

mosquitto: World-readable persistence file possibly leaking sensitive information

  • 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

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.