CVE-2026-8312 - Vulnerability Details - OpenCVE

A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the expmt.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

No data.

No data.

References

Link	Providers
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1784.html

History

Tue, 14 Jul 2026 14:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 14 Jul 2026 13:15:00 +0000

Type	Values Removed	Values Added
Description		A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the expmt.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file.
Title		Rockwell Automation Arena® - Memory Corruption Vulnerability
Weaknesses		CWE-787
References		https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1784.html
Metrics		cvssV4_0 `{'score': 7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: Rockwell

Published: 2026-07-14T12:43:09.839Z

Updated: 2026-07-14T13:27:53.655Z

Reserved: 2026-05-11T12:39:37.355Z

Link: CVE-2026-8312

Vulnrichment

Updated: 2026-07-14T13:27:48.808Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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