CVE-2019-13132

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.

Published: 2019-07-10 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-13132 is rated High Risk (78.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 42.46%, 99th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +24.30% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-13132

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 18.16% 42.46% +24.30%
2 2026-06-10 22.27% 18.16% -4.11%
3 2026-05-29 — 22.27% —

Full EPSS history (64 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-13132

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2019-13132

OS Trackers for CVE-2019-13132

vendor priority summary link
alpine — CVE-2019-13132: 1 source package rows (zeromq); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2019-13132
debian not yet assigned CVE-2019-13132 not yet assigned priority: Debian including 1 source packages (zeromq3), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-13132
gentoo high CVE-2019-13132: 1 GLSA(s) (201908-17), 1 atom(s) (net-libs/zeromq); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-13132
redhat medium — https://access.redhat.com/security/cve/CVE-2019-13132
suse high CVE-2019-13132 severity important: SUSE including 262 source package names (0.3.2-1.2:libzmq5-4.2.3-3.8.1, 0.6.41-13.9:libzmq5-4.2.3-3.8.1, …), 454 product×package rows across 199 product lines (Container containers/lmcache-vllm-openai, Container containers/open-webui, … (199 product lines)): Known Affected 231, Fixed 223. https://www.suse.com/security/cve/CVE-2019-13132/
ubuntu high CVE-2019-13132 high priority: Ubuntu including 1 source packages (zeromq3), 12 status rows across 12 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, trusty, upstream, xenial): released 11, pending 1. https://ubuntu.com/security/CVE-2019-13132

Affected software / configurations for CVE-2019-13132

Vendor Product Version Raw CPE
zeromq libzmq < 4.0.9 cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*
zeromq libzmq >= 4.1.0, < 4.1.7 cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*
zeromq libzmq >= 4.2.0, < 4.3.2 cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
fedoraproject fedora 29 cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

References for CVE-2019-13132

URL Tags
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 List Release Notes Third Party Advisory
http://www.securityfocus.com/bid/109284 Broken Link Third Party Advisory VDB Entry
https://fangpenlin.com/posts/2024/04/07/how-i-discovered-a-9-point-8-critical-security-vulnerability-in-zeromq-with-mostly-pure-luck/
https://github.com/zeromq/libzmq/issues/3558 Third Party Advisory
https://github.com/zeromq/libzmq/releases Release Notes Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00007.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AVCTNUEOFFZUNJOXFCYCF3C6Y6NDILI3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MK7SJYDJ7MMRRRPCUN3SCSE7YK6ZSHVS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6HINI24SL7CU6XIJWUOSGTZWEFOOL7X/
https://news.ycombinator.com/item?id=39970716
https://seclists.org/bugtraq/2019/Jul/13 Mailing List Third 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
cvelogic Threat Intelligence