CVE catalog

CVE-2019-11778

mosquitto: CVE-2019-11778

Severity: Medium
Published: Sep 18, 2019, 11:15:10 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.76% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	mosquitto	sid	`2.1.2-3`	fixed
Debian	mosquitto	forky	`2.1.2-3`	fixed
Debian	mosquitto	trixie	`2.0.21-1`	fixed
Debian	mosquitto	bookworm	`2.0.11-1.2+deb12u2`	fixed
Debian	mosquitto	bookworm-security	`2.0.11-1.2+deb12u1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	mosquitto	source	sid	`1.6.6-1`	not yet assigned	Not reported	Not reported
Debian	mosquitto	source	forky	`1.6.6-1`	not yet assigned	Not reported	Not reported
Debian	mosquitto	source	trixie	`1.6.6-1`	not yet assigned	Not reported	Not reported
Debian	mosquitto	source	bookworm	`1.6.6-1`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libmosquitto1]Fixed
Source package: [mosquitto]
Details (6)
- 2.0.11-1.2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
[libmosquitto-dev]Fixed
Source package: [mosquitto]
Details (6)
- 2.0.11-1.2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
[libmosquittopp1]Fixed
Source package: [mosquitto]
Details (6)
- 2.0.11-1.2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
[libmosquittopp-dev]Fixed
Source package: [mosquitto]
Details (6)
- 2.0.11-1.2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
[mosquitto]Fixed
Details (6)
- 2.0.11-1.2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
[mosquitto-clients]Fixed
Source package: [mosquitto]
Details (6)
- 2.0.11-1.2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
[mosquitto-dev]Fixed
Source package: [mosquitto]
Details (6)
- 2.0.11-1.2+deb12u2 · all · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u2 · all · bookworm
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.21-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · all · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12
- 2.0.11-1.2+deb12u1 · all · bookworm-security
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · bookworm; dsa · mosquitto · debian · 12

[Debian 13 (Trixie)]

[libmosquitto1]Fixed
Source package: [mosquitto]
Details (2)
- 2.0.21-1 · amd64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
- 2.0.21-1 · arm64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
[libmosquitto-dev]Fixed
Source package: [mosquitto]
Details (2)
- 2.0.21-1 · amd64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
- 2.0.21-1 · arm64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
[libmosquittopp1]Fixed
Source package: [mosquitto]
Details (2)
- 2.0.21-1 · amd64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
- 2.0.21-1 · arm64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
[libmosquittopp-dev]Fixed
Source package: [mosquitto]
Details (2)
- 2.0.21-1 · amd64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
- 2.0.21-1 · arm64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
[mosquitto]Fixed
Details (2)
- 2.0.21-1 · amd64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
- 2.0.21-1 · arm64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
[mosquitto-clients]Fixed
Source package: [mosquitto]
Details (2)
- 2.0.21-1 · amd64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
- 2.0.21-1 · arm64 · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
[mosquitto-dev]Fixed
Source package: [mosquitto]
Details (2)
- 2.0.21-1 · all · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13
- 2.0.21-1 · all · trixie
  Fixed · Fixed: 1.6.6-1
  dsa · mosquitto · debian · 13

Observed: Oct 23, 2026, 5:39:24 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]