An issue was discovered in Suricata 4.1.x before 4.1.4.

published 2019-05-13 7y ago modified 2026-06-17 4mo ago also EUVD-2019-2116

cvss: 9.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits: 0; none known

An issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the function SSHParseBanner is composed only of a \n character, then the program runs into a heap-based buffer over-read. This occurs because the erroneous search for \r results in an integer underflow.

Patch / fix

fixed in 1 distros 2 links 1

suricata-ids suricata 4.1.4

debian opensuse

suricata Debian 14, Debian 13 1:4.1.4-1

debian advisories DEBIAN-CVE-2019-10053

suricata openSUSE Tumbleweed 8.0.0-1.1

opensuse advisories openSUSE-SU-2025:15394-1

suricata-ids.org/2019/04/30/suricata-4-1-4-released/ advisory

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-10053 updated 2025-11-21 cvss 4.3

suricata: heap-based buffer over-read in function SSHParseBanner

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.71% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-125 Out-of-bounds Read
CWE-191 Integer Underflow (Wrap or Wraparound)

References

suricata-ids.org /2019/04/30/suricata-4-1-4-released/
patch, vendor-advisory
lists.openinfosecfoundation.org /pipermail/oisf-announce/
third-party-advisory

Sources

CVE List CVE-2019-10053
NVD CVE-2019-10053

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