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Noroxi
NVD / CVE Program· CNA Rockwell

CVE-2024-21920: Rockwell Automation Arena Simulation Vulnerable To Buffer Overflow

HighCVSS 7.1 · v3.1—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.
  • Severity is disputed: the assigning authority (CNA) scores it 4.4, NVD 7.1.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A memory buffer vulnerability in Rockwell Automation Arena Simulation could potentially let a threat actor read beyond the intended memory boundaries. This could reveal sensitive information and even cause the application to crash, resulting in a denial-of-service condition. To trigger this, the user would unwittingly need to open a malicious file shared by the threat actor.

Published
Mar 26, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.1
CNA · Rockwell
4.4
2.7 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-21920

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
rockwellautomationarena

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Rockwell). Independent of NVD's CPE analysis and usually ahead of it.

  • Rockwell Automation Arena Simulation

    • Version 16.00 - 16.20.02affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • rockwellautomation arena16.00.00 and later

Same product

rockwellautomation: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-29461Rockwell Automation Arena Simulation Software Remote Code Execution Vulnerability
    39Monitor
  • CVE-2023-29460Rockwell Automation Arena Simulation Software Remote Code Execution Vulnerability
    39Monitor
  • CVE-2023-29462Rockwell Automation Arena Simulation Software Remote Code Execution Vulnerability
    35Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-21918Mar 26, 2024 · Rockwell Automation Arena Simulation Vulnerable To Memory Corruption
    31Monitor
  • ← EarlierCVE-2024-21919Mar 26, 2024 · Rockwell Automation Arena Simulation Vulnerable To Uninitialized Pointer
    31Monitor
  • Later →CVE-2024-2929Mar 26, 2024 · Rockwell Automation Arena Simulation Vulnerable To Memory Corruption
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-29460322 days apartRockwell Automation Arena Simulation Software Remote Code Execution Vulnerability
    39Monitor
  • CVE-2023-29461322 days apartRockwell Automation Arena Simulation Software Remote Code Execution Vulnerability
    39Monitor
  • CVE-2024-12130254 days apartRockwell Automation Arena® Out of Bounds Read Vulnerability
    34Monitor
  • CVE-2025-3285378 days apartLocal Code Execution Vulnerability in Arena®
    34Monitor
  • CVE-2025-3286378 days apartLocal Code Execution Vulnerability in Arena®
    34Monitor
  • CVE-2025-3287378 days apartLocal Code Execution Vulnerability in Arena®
    34Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records