High severity · published Jul 14, 2026
CVE-2026-8312
Rockwell Automation Arena® - Memory Corruption Vulnerability
7.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Arena® Simulation · Rockwell Auotmation
V17.00.00 and prior · source: vendor
AR
Arena · Rockwellautomation
before 17.00.01 · source: NVD
In the news
VulnerabilityHigh
Rockwell Automation Arena
View CSAF
Summary
Successful exploitation these vulnerabilities could allow an attacker to execute arbitrary code in the context of the current process.
The following versions of Rockwell Automation Arena are affected:
Arena <=V17.00.00 (CVE-2026-8085, CVE-2026-8312, CVE-2026-8313, CVE-2026-8314)
CVSS
Vendor
Equipment
Vulnerabilities
v3 7.8
Rockwell Automation
Rockwell Automation Arena
Out-of-bounds Write
Background
Critical Infrastructure Sectors: Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: United States
Vulnerabilities
Expand All +
CVE-2026-8085
A security issue exists within Arena Simulation due to a memory corruption vulnerability in the model.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.
View CVE Details
Affected Products
Rockwell Automation Arena
Vendor: Rockwell Automation
Product Version: Rockwell Automation Arena: <=V17.00.00
Product Status: known_affected
Remediations
Mitigation Rockwell Automation recommends users to update to V17.00.01
Relevant CWE: CWE-787 Out-of-bounds Write
Metrics
CVSS Version
Base Score
Base Sev...
Jul 16, 2026·CISA Advisories
