How severe is CVE-2026-8313?

CVE-2026-8313 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-8313 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8313?

CVE-2026-8313 affects Rockwellautomation Arena. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8313?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-8313 published?

CVE-2026-8313 was published on 2026-07-14 and last updated on 2026-07-15.

CVE-2026-8313

CVE-2026-8313 is a high-severity vulnerability in Rockwellautomation Arena with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v4: 7.0
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Rockwellautomation Arena
Published: 2026-07-14
Last modified: 2026-07-15

Description

A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the linker.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.

Frequently asked questions

What is CVE-2026-8313?: A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the linker.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.
How severe is CVE-2026-8313?: CVE-2026-8313 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-8313 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8313?: CVE-2026-8313 affects Rockwellautomation Arena. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8313?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-8313 published?: CVE-2026-8313 was published on 2026-07-14 and last updated on 2026-07-15.

References

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

Affected products (1)

cpe:2.3:a:rockwellautomation:arena:*:*:*:*:*:*:*:*

More vulnerabilities in Rockwellautomation Arena

CVE-2025-7033 — High (CVSS 7.8): A memory abuse issue exists in the Rockwell Automation Arena® Simulation. A custom file can force Arena Simulation to…
CVE-2025-7032 — High (CVSS 7.8): A memory abuse issue exists in the Rockwell Automation Arena® Simulation. A custom file can force Arena Simulation to…
CVE-2025-7025 — High (CVSS 7.8): A memory abuse issue exists in the Rockwell Automation Arena® Simulation. A custom file can force Arena Simulation to…
CVE-2025-6377 — High (CVSS 7.8): A remote code execution security issue exists in the Rockwell Automation Arena®. A crafted DOE file can force…
CVE-2025-6376 — High (CVSS 7.8): A remote code execution security issue exists in the Rockwell Automation Arena®. A crafted DOE file can force…
CVE-2025-3289 — High (CVSS 7.8): A local code execution vulnerability exists in the Rockwell Automation Arena® due to a stack-based memory buffer…

All CVEs affecting Rockwellautomation Arena →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →