CVE-2017-7652
In Eclipse Mosquitto 1.4.14, if a Mosquitto instance is set running with a configuration file, then sending a HUP signal to server triggers the configuration to be reloaded from disk.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Eclipse Mosquitto 1.4.14, if a Mosquitto instance is set running with a configuration file, then sending a HUP signal to server triggers the configuration to be reloaded from disk. If there are lots of clients connected so that there are no more file descriptors/sockets available (default limit typically 1024 file descriptors on Linux), then opening the configuration file will fail.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.62% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-789
- Affected
- eclipse/mosquitto · debian/debian linux
- Source
- emo@eclipse.org
EPSS 1.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=530102Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00037.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/06/msg00016.htmlMailing List, Third Party Advisory
- https://mosquitto.org/blog/2018/02/security-advisory-cve-2017-7651-cve-2017-7652/Patch, Vendor Advisory
- https://www.debian.org/security/2018/dsa-4325Third Party Advisory
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=530102Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00037.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/06/msg00016.htmlMailing List, Third Party Advisory
- https://mosquitto.org/blog/2018/02/security-advisory-cve-2017-7651-cve-2017-7652/Patch, Vendor Advisory
- https://www.debian.org/security/2018/dsa-4325Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.