CVE-2026-8312

Rockwell Automation Arena® - Memory Corruption Vulnerability

Published Jul 14, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Upgrade to  V17.00.01 or later

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Rockwell
Published
Updated
Jul 14, 2026, 1:27 PM
Reserved
May 11, 2026, 12:39 PM
Status
Analyzed
Published
Jul 14, 2026, 1:19 PM
Modified
Oct 24, 2026, 9:10 PM