CVE-2026-8312: A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the expmt.exe (Si

Q: How do I fix CVE-2026-8312?

arena: upgrade to 17.00.01. Exact commands for each OS are on this page.

Q: Is CVE-2026-8312 being exploited?

CVE-2026-8312 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-8312 affect?

CVE-2026-8312 affects arena. Severity is high (CVSS 7.3). 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

Routine

HIGH 7.3UPGRADE

CVE-2026-8312 is a high-severity flaw (CVSS 7.3) affecting arena. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-07-14
Last modified	2026-10-24

Publisher (CNA): Rockwell Automation · Vendor: rockwellautomation

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-14 13:19 UTCPublished CVE record published
2026-10-24 21:10 UTCUpdated Record last modified

rockwellautomation arena UPGRADE

Affected: < 17.00.01

Fixed in: 17.00.01

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy arena || rpm -q arena || arena --version

2. UPGRADE to 17.00.01 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade arena

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade arena

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-8312?

arena: upgrade to 17.00.01. Exact commands for each OS are on this page.

Is CVE-2026-8312 being exploited?

CVE-2026-8312 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-8312 affect?

CVE-2026-8312 affects arena. Severity is high (CVSS 7.3). 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

How urgent is CVE-2026-8312?

Priority 30/100. High severity

Related CVEs

CVE-2026-8085 HIGH 7.3 UPGRADE A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the model.exe (Si
CVE-2026-8313 HIGH 7.3 UPGRADE A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the linker.exe (S
CVE-2026-8314 HIGH 7.3 UPGRADE A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the siman.exe (Si

References

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