VulnerabilityAnalyzed

CVE-2026-8314

A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the siman.exe (Siman) component.

HIGH 7.0EPSS 0.23%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the siman.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 4.0: 7.0 HIGHCVSS: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/M
EPSS: 0.23% probability · 14th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: rockwellautomation/arena
Source: PSIRT@rockwellautomation.com

References

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1784.htmlVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.