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CVE-2019-13132

54
FAUCET Score

CVE-2019-13132 is a critical buffer overflow vulnerability in ZeroMQ libzmq versions prior to 4.0.9, 4.1.7, and 4.3.2, affecting products like Canonical, Debian, and Fedora. A remote, unauthenticated client can trigger a stack overflow and overwrite arbitrary data on servers with CURVE encryption/authentication enabled. This vulnerability carries a CVSS score of 9.8 (CRITICAL) due to its network attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, including a report of a bug bounty payout related to it.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.0.9CPE matchmatch criteria
cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*
>= 4.1.0, < 4.1.7CPE matchmatch criteria
cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.3.2CPE matchmatch criteria
cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
42.46%
Probability of exploitation in next 30 days
EPSS Percentile
98.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.4246 is in the 96th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Advisories (1)

redhatCVE-2019-13132Moderate

zeromq: stack-overflow on any server protected by encryption/authentication

Jul 15, 2019

References

lists.opensuse.org / opensuse-security-announce/2019-07/msg00033.html
Broken Link
fangpenlin.com / posts/2024/04/07/how-i-discovered-a-9-point-8-critical-security-vulnerability-in-zeromq-with-mostly-pure-luck
github.com / zeromq/libzmq/issues/3558
Third Party Advisory
github.com / zeromq/libzmq/releases
Release NotesThird Party Advisory
lists.debian.org / debian-lts-announce/2019/07/msg00007.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/AVCTNUEOFFZUNJOXFCYCF3C6Y6NDILI3
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MK7SJYDJ7MMRRRPCUN3SCSE7YK6ZSHVS
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/T6HINI24SL7CU6XIJWUOSGTZWEFOOL7X
news.ycombinator.com / item
seclists.org / bugtraq/2019/Jul/13
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201908-17
Third Party Advisory
usn.ubuntu.com / 4050-1
Third Party Advisory
debian.org / security/2019/dsa-4477
Third Party Advisory
openwall.com / lists/oss-security/2019/07/08/6
Mailing ListRelease NotesThird Party Advisory
securityfocus.com / bid/109284
Broken LinkThird Party AdvisoryVDB Entry