CVE-2025-9166

highpriority · track · 30EPSS 0.004 · 37 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.43% (37th) EPSS

CVSS 7.5 · high

Is it mine?

6 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · cisa_csaf_ot

EPSS · scored 2026-10-25

A denial-of-service security issue exists in the affected product and version. The security issue stems from the controller repeatedly attempting to forward messages. The issue could result in a major nonrecoverable fault on the controller.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationControlLogix 5580cisa_csaf_ot
Rockwell Automation recommends users to update to version 35.014 or later if possible. If users of the affected software are unable to upgrade the version, security best practices should be applied.
https://compatibility.rockwellautomation.com/Pages/MultiProductFindDownloads.aspx?crumb=112&mode=3&refSoft=1&versions=65620

cvss

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–8.2

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v4.08.2highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.08.2highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · PSIRT@rockwellautomation.com

v4.04.6mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USCWE-476US

affected products (6)

Products and version ranges known to be affected.

Rockwell Automation ControlLogix 5580 <35.014all versionscert_bundDE
Rockwell Automation ControlLogix≤ 5580 <35.014cert_bundDE
Rockwell Automation ControlLogix 5580: 35.013all versionscisa_csaf_otUS
Rockwell Automation ControlLogix 5580all versionscisa_csaf_otUS
Rockwell Automation ControlLogix® 5580≤ Version 35.013enisa_euvdEU
rockwellautomation controllogix 5580 firmware= 35.013nvdUScpe:2.3:o:rockwellautomation:controllogix_5580_firmware:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-2000Rockwell Automation ControlLogix: Schwachstelle ermöglicht Denial of ServiceDeutsch2025-09-08csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Rockwell Automation ControlLogix ausnutzen, um einen Denial of Service Angriff durchzuführen.
ICSA-25-252-07Rockwell Automation ControlLogix 55802025-09-09icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could result in a major nonrecoverable fault on the controller.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund cisa_csaf_ot nvd NVD CVE.org MITRE

published 2025-09-09modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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