CVE-2019-16410

An issue was discovered in Suricata 4.1.4. By sending multiple fragmented IPv4 packets, the...

9.1 CriticalFix available

An issue was discovered in Suricata 4.1.4. By sending multiple fragmented IPv4 packets, the function Defrag4Reassemble in defrag.c tries to access a memory region that is not allocated, because of a lack of header_len checking.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: High

Exploit likelihood

2.14%Up 1.3 points since Apr 14, 2021

What each source reports

NVD Score used 9.1

Record: CVE-2019-16410
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 2.0: 6.4 MediumAV:N/AC:L/Au:N/C:P/I:N/A:P
Weakness: CWE-125
Updated: 2026-11-02

CVE List No score

Record: CVE-2019-16410
Updated: 2026-11-02

EUVDEUVD-2019-7152 No score

Record: EUVD-2019-7152
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rwqc-wjqr-v9q2 9.1

An issue was discovered in Suricata 4.1.4. By sending multiple fragmented IPv4 packets, the...

Record: GHSA-rwqc-wjqr-v9q2
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

OSV 9.1

Record: CVE-2019-16410
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2019-16410 9.1

Record: DEBIAN-CVE-2019-16410
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2019-16410 9.1

Record: UBUNTU-CVE-2019-16410
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated: 2026-11-02

Affected products

suricata-ids suricata

Affected packages

Affected packages
Package	Affected	Fixed
`suricata` Debian:13	before 1:4.1.5-1	1:4.1.5-1
`suricata` Debian:14	before 1:4.1.5-1	1:4.1.5-1
`suricata` Ubuntu:16.04:LTS	All versions, plus listed versions 2.0.8-1build12.0.9-12.0.10-12.0.10-22.0.11-13.0-1	None known
`suricata` Ubuntu:18.04:LTS	All versions, plus listed versions 3.2-2ubuntu3	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-16410 is a critical vulnerability (CVSS 9.1) in Suricata-ids Suricata, published September 24, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.14%, the 82nd percentile. Fixed in suricata 1:4.1.5-1.