CVE-2019-11778 json
If an MQTT v5 client connects to Eclipse Mosquitto versions 1.6.0 to 1.6.4 inclusive, sets a last will and testament, sets a will delay int…
published 2019-09-18 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3445
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
If an MQTT v5 client connects to Eclipse Mosquitto versions 1.6.0 to 1.6.4 inclusive, sets a last will and testament, sets a will delay interval, sets a session expiry interval, and the will delay interval is set longer than the session expiry interval, then a use after free error occurs, which has the potential to cause a crash in some situations.
Patch / fix
- eclipse mosquitto 1.6.5
- mosquitto Debian 14, Debian 13, Debian 12 1.6.6-1
debian advisories DEBIAN-CVE-2019-11778
Exploit prediction
0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| NVD | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:N/I:P/A:P |
Affected products
- The Eclipse Foundation Eclipse Mosquitto
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
bugs.eclipse.org
/bugs/show_bug.cgi?id=551162
vendor-advisory
Sources
- CVE List CVE-2019-11778
- NVD CVE-2019-11778
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.