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Vulnerability record · CVE-2019-13132 · published 10 July 2019

CVE-2019-13132: Zeromq libzmq out-of-bounds write vulnerability

Zeromq · Libzmq

In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.

9.8 CVSS 3.1 Critical EPSS 42% · top 1.4% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
30References
17 Jun 2026Last modified by NVD

Description

In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00033.html Broken Link
http://www.openwall.com/lists/oss-security/2019/07/08/6 Mailing ListRelease NotesThird Party Advisory
http://www.securityfocus.com/bid/109284 Broken LinkThird Party AdvisoryVDB Entry
https://fangpenlin.com/posts/2024/04/07/how-i-discovered-a-9-point-8-critical-security-vulnerability-in-zeromq-with-most
https://github.com/zeromq/libzmq/issues/3558 Third Party Advisory
https://github.com/zeromq/libzmq/releases Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00007.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AVCTNUEOFFZUNJOXFCYCF3C
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MK7SJYDJ7MMRRRPCUN3SCSE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6HINI24SL7CU6XIJWUOSGT
https://news.ycombinator.com/item?id=39970716
https://seclists.org/bugtraq/2019/Jul/13 Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201908-17 Third Party Advisory
https://usn.ubuntu.com/4050-1/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4477 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00033.html Broken Link
http://www.openwall.com/lists/oss-security/2019/07/08/6 Mailing ListRelease NotesThird Party Advisory
http://www.securityfocus.com/bid/109284 Broken LinkThird Party AdvisoryVDB Entry
https://fangpenlin.com/posts/2024/04/07/how-i-discovered-a-9-point-8-critical-security-vulnerability-in-zeromq-with-most
https://github.com/zeromq/libzmq/issues/3558 Third Party Advisory
https://github.com/zeromq/libzmq/releases Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00007.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AVCTNUEOFFZUNJOXFCYCF3C
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MK7SJYDJ7MMRRRPCUN3SCSE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6HINI24SL7CU6XIJWUOSGT
https://news.ycombinator.com/item?id=39970716
https://seclists.org/bugtraq/2019/Jul/13 Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201908-17 Third Party Advisory
https://usn.ubuntu.com/4050-1/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4477 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-13132), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.