CVE-2026-57224Hinoki check available

Monitoring denial of service via directionless parser transactions

Published Sep 18, 2026 · Updated Sep 18, 2026

Resource exhaustion in Suricata 8.0.0 through 8.0.5 allows attackers to interrupt monitoring using unidirectional DHCP or RDP traffic. The DHCP and RDP parsers create stateless transactions without recording packet direction, preventing unseen-direction inspection and transaction release. A sensor must see only one traffic direction; the retained per-flow list grows without bound, and repeated cleanup scans consume increasing CPU and memory until monitoring becomes unavailable.

CVSS severity6.5
Medium
EPSS probability0.41%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Resource exhaustion in Suricata 8.0.0 through 8.0.5 allows attackers to interrupt monitoring using unidirectional DHCP or RDP traffic. The DHCP and RDP parsers create stateless transactions without recording packet direction, preventing unseen-direction inspection and transaction release. A sensor must see only one traffic direction; the retained per-flow list grows without bound, and repeated cleanup scans consume increasing CPU and memory until monitoring becomes unavailable.

The record

CVE
CVE-2026-57224
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
Open Information Security Foundation
Product
Suricata
Classifications
CWE-400, CWE-770, T1499.002
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 8.0.0, < 8.0.6

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Open Information Security Foundation · Suricataversion=>= 8.0.0, < 8.0.6

Published CVSS scores

6.5GitHub Security AdvisoryCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-770Allocation of Resources Without Limits or Throttling
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started