IM
IronMonkey Threat Research

CVE-2026-8312 HIGH

Published: 2026-07-14 | Last Modified: 2026-07-15 | Status: Analyzed

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 Metrics

Base Score: 7.3 (HIGH)

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionREQUIRED
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactHIGH
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.3

Impact Score: 5.9

Base Score: 7.0 (HIGH)

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/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:X

Attack VectorLOCAL
Attack ComplexityLOW
Attack RequirementsNONE
Privileges RequiredLOW
User InteractionPASSIVE
Vulnerability ConfidentialityHIGH
Vulnerability IntegrityHIGH
Vulnerability AvailabilityHIGH
Subsequent ConfidentialityNONE
Subsequent IntegrityNONE
Subsequent AvailabilityNONE

Source: [email protected]

Type: Secondary

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-787

Affected Products

Vendor Product Version Update Type
rockwellautomation arena * <built-in method update of dict object at 0x702bddc2e5c0> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:rockwellautomation:arena:*:*:*:*:*:*:*:*
Notification
Message here