CVE-2026-8085

Code execution via model.exe out-of-bounds write

Published Jul 14, 2026 · Updated Jul 14, 2026

Out-of-bounds write in Rockwell Automation Arena Simulation 17.00.00 and earlier allows attackers to execute code through a malicious file. The model.exe (Siman) component inadequately validates file-supplied data before writing it beyond an allocated memory boundary. Execution requires a local user to open the crafted file and runs in the context of the Arena process.

CVSS severity7.0
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds write in Rockwell Automation Arena Simulation 17.00.00 and earlier allows attackers to execute code through a malicious file. The model.exe (Siman) component inadequately validates file-supplied data before writing it beyond an allocated memory boundary. Execution requires a local user to open the crafted file and runs in the context of the Arena process.

The record

CVE
CVE-2026-8085
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
Rockwell Automation
Product
Arena Simulation
Classifications
CWE-787, T1204.002, T1203
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 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=V17.00.00 and prior

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Rockwell Automation · Arena Simulationversion=V17.00.00 and prior

Published CVSS scores

7.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
7.0Rockwell AutomationCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File
T1203Exploitation for Client Execution

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

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo