CVE-2016-10728: An issue was discovered in Suricata before 3.1.2

Q: How do I fix CVE-2016-10728?

suricata: upgrade to 3.1.2. Exact commands for each OS are on this page.

Q: Is CVE-2016-10728 being exploited?

CVE-2016-10728 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2016-10728 affect?

CVE-2016-10728 affects suricata. Severity is medium (CVSS 5.3). An issue was discovered in Suricata before 3.1.2. If an ICMPv4 error packet is received as the first packet on a flow in the to_client direction, it confuses the rule grouping lookup logic. The toclient inspection will then continue with th

Q: How urgent is CVE-2016-10728?

Priority 49/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2016-10728 is a medium-severity flaw (CVSS 5.3) affecting suricata. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Suricata before 3.1.2. If an ICMPv4 error packet is received as the first packet on a flow in the to_client direction, it confuses the rule grouping lookup logic. The toclient inspection will then continue with the wrong rule group. This can lead to missed detection.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-20
Published	2018-07-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: suricata-ids

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-07-23 20:29 UTCPublished CVE record published
2026-06-17 00:40 UTCUpdated Record last modified

suricata-ids suricata UPGRADE

Affected: < 3.1.2

Fixed in: 3.1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy suricata || rpm -q suricata || suricata --version

2. UPGRADE to 3.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade suricata

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade suricata

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-10728?

suricata: upgrade to 3.1.2. Exact commands for each OS are on this page.

Is CVE-2016-10728 being exploited?

CVE-2016-10728 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-10728 affect?

CVE-2016-10728 affects suricata. Severity is medium (CVSS 5.3). An issue was discovered in Suricata before 3.1.2. If an ICMPv4 error packet is received as the first packet on a flow in the to_client direction, it confuses the rule grouping lookup logic. The toclient inspection will then continue with th

How urgent is CVE-2016-10728?

Priority 49/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Suricata and Snort vulnerabilities

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References

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