CVE catalog

CVE-2019-6250

zeromq3: CVE-2019-6250

Severity: High · CVSS 7.2CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: Jan 13, 2019, 3:29:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 9.70% · Oct 25, 2026

A pointer overflow, with code execution, was discovered in ZeroMQ libzmq (aka 0MQ) 4.2.x and 4.3.x before 4.3.1. A v2_decoder.cpp zmq::v2_decoder_t::size_ready integer overflow allows an authenticated attacker to overwrite an arbitrary amount of bytes beyond the bounds of a buffer, which can be leveraged to run arbitrary code on the target system. The memory layout allows the attacker to inject OS commands into a data structure located immediately after the problematic buffer (i.e., it is not necessary to use a typical buffer-overflow exploitation technique that changes the flow of control).

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	zeromq3	sid	`4.3.5-1`	fixed
Debian	zeromq3	forky	`4.3.5-1`	fixed
Debian	zeromq3	trixie	`4.3.5-1`	fixed
Debian	zeromq3	bookworm	`4.3.4-6`	fixed
Alpine	zeromq	3.10	`4.3.1-r0`	fixed
Alpine	zeromq	3.11	`4.3.1-r0`	fixed
Alpine	zeromq	3.12	`4.3.1-r0`	fixed
Alpine	zeromq	3.13	`4.3.1-r0`	fixed
Alpine	zeromq	3.14	`4.3.1-r0`	fixed
Alpine	zeromq	3.15	`4.3.1-r0`	fixed
Alpine	zeromq	3.16	`4.3.1-r0`	fixed
Alpine	zeromq	3.17	`4.3.1-r0`	fixed
Alpine	zeromq	3.18	`4.3.1-r0`	fixed
Alpine	zeromq	3.19	`4.3.1-r0`	fixed
Alpine	zeromq	3.20	`4.3.1-r0`	fixed
Alpine	zeromq	3.21	`4.3.1-r0`	fixed
Alpine	zeromq	3.22	`4.3.1-r0`	fixed
Alpine	zeromq	3.23	`4.3.1-r0`	fixed
Alpine	zeromq	3.24	`4.3.1-r0`	fixed
Alpine	zeromq	3.6	`4.2.5-r0`	fixed
Alpine	zeromq	3.7	`4.2.5-r0`	fixed
Alpine	zeromq	3.8	`4.2.5-r0`	fixed
Alpine	zeromq	3.9	`4.3.1-r0`	fixed
Opensuse	python-pyzmq	tumbleweed	`27.1.0-3.1`	fixed
Ubuntu	zeromq3	18.04	`4.2.1-4ubuntu1`	vulnerable
Ubuntu	zeromq3	18.04	`4.2.2-1ubuntu2`	vulnerable
Ubuntu	zeromq3	18.04	`4.2.3-1`	vulnerable
Ubuntu	zeromq3	18.04	`4.2.3-1build1`	vulnerable
Ubuntu	zeromq3	18.04	`4.2.5-1`	vulnerable
Ubuntu	zeromq3	18.04	`4.2.5-1ubuntu0.1`	fixed
Suse	zeromq	linux enterprise module for basesystem 15	`4.2.3-3.3.2`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	zeromq3	source	sid	`4.3.1-1`	not yet assigned	Not reported	[919098]
Debian	zeromq3	source	forky	`4.3.1-1`	not yet assigned	Not reported	[919098]
Debian	zeromq3	source	trixie	`4.3.1-1`	not yet assigned	Not reported	[919098]
Debian	zeromq3	source	bookworm	`4.3.1-1`	not yet assigned	Not reported	[919098]
Alpine	zeromq	apk	3.10	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.11	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.12	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.13	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.14	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.15	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.16	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.17	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.18	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.19	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.20	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.21	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.22	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.23	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.24	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.6	`4.2.5-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.7	`4.2.5-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.8	`4.2.5-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Alpine	zeromq	apk	3.9	`4.3.1-r0`	Not reported	ALPINE-CVE-2019-6250	Not reported
Opensuse	python-pyzmq	rpm	tumbleweed	`27.1.0-3.1`	Not reported	OPENSUSE-SU-2026:11459-1	Not reported
Ubuntu	zeromq3	deb	18.04	`4.2.5-1ubuntu0.1`	Not reported	UBUNTU-CVE-2019-6250	Not reported
Suse	zeromq	rpm	linux enterprise module for basesystem 15	`4.2.3-3.3.2`	Not reported	SUSE-SU-2019:0110-1	Not reported

[Debian bug #919098]

OpenFactory catalog packages

[openSUSE Tumbleweed]

[python313-pyzmq]Unknown
Source package: [python-pyzmq]
Details (1)
- 27.2.0-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 27.1.0-3.1
  Version impact unknown
  dsa · python-pyzmq · opensuse · tumbleweed
[python313-pyzmq-devel]Unknown
Source package: [python-pyzmq]
Details (1)
- 27.2.0-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 27.1.0-3.1
  Version impact unknown
  dsa · python-pyzmq · opensuse · tumbleweed
[python314-pyzmq]Unknown
Source package: [python-pyzmq]
Details (1)
- 27.2.0-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 27.1.0-3.1
  Version impact unknown
  dsa · python-pyzmq · opensuse · tumbleweed
[python314-pyzmq-devel]Unknown
Source package: [python-pyzmq]
Details (1)
- 27.2.0-1.1 · x86_64 · tumbleweed
  Unknown · Fixed: 27.1.0-3.1
  Version impact unknown
  dsa · python-pyzmq · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[libzmq3-dev]Fixed
Source package: [zeromq3]
Details (2)
- 4.3.4-6 · amd64 · bookworm
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · bookworm; dsa · zeromq3 · debian · 12
- 4.3.4-6 · arm64 · bookworm
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · bookworm; dsa · zeromq3 · debian · 12
[libzmq5]Fixed
Source package: [zeromq3]
Details (2)
- 4.3.4-6 · amd64 · bookworm
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · bookworm; dsa · zeromq3 · debian · 12
- 4.3.4-6 · arm64 · bookworm
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · bookworm; dsa · zeromq3 · debian · 12

[Debian 13 (Trixie)]

[libzmq3-dev]Fixed
Source package: [zeromq3]
Details (2)
- 4.3.5-1+b3 · amd64 · trixie
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · 13
- 4.3.5-1+b3 · arm64 · trixie
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · 13
[libzmq5]Fixed
Source package: [zeromq3]
Details (2)
- 4.3.5-1+b3 · amd64 · trixie
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · 13
- 4.3.5-1+b3 · arm64 · trixie
  Fixed · Fixed: 4.3.1-1
  dsa · zeromq3 · debian · 13

Observed: Oct 23, 2026, 5:44:50 PM UTC

References

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