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Vulnerabilities

Vulnerability · CVE-2023-3595

rockwellautomation 1756-en2f_series_a_firmware Out-of-bounds Write

Published Feb 20, 2024 · catalog updated Feb 20, 2024 · rockwellautomation 1756-en2f_series_a_firmware Out-of-bounds Write

Patch now

CVE-2023-3595 is in the CISA known-exploited catalog. Confirm rockwellautomation 1756-en2f_series_a_firmware Out-of-bounds Write against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (rockwellautomation 1756-en2f_series_a_firmware Out-of-bounds Write).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
5.53%
Remediation
Remediation guidance
Affected products
vendor rockwellautomation 1756-en2f_series_a_firmware

Where this vulnerability exists in the Rockwell Automation 1756 EN2* and 1756 EN3* ControlLogix communication products, it could allow a malicious user to perform remote code execution with persistence on the target system through maliciously crafted CIP messages. This includes the ability to modify, deny, and exfiltrate data passing through the device.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor rockwellautomation 1756-en2f_series_a_firmwareversion unspecified

How to fix CVE-2023-3595

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-3595 is in the CISA known-exploited catalog. Confirm rockwellautomation 1756-en2f_series_a_firmware Out-of-bounds Write against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 5.53%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 20, 2024 · VulnCheck KEV

    Detected

    Where this vulnerability exists in the Rockwell Automation 1756 EN2* and 1756 EN3* ControlLogix communication products, it could allow a malicious user to perform remote code execution with persistence on the target system through maliciously crafted CIP messages. This includes the ability to modify, deny, and exfiltrate data passing through the device.

  2. Feb 20, 2024 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2023-3595

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-3595

    30-day exploitation probability 5.5%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2023-3595

    Where this vulnerability exists in the Rockwell Automation 1756 EN2* and 1756 EN3* ControlLogix communication products, it could allow a malicious user to perform remote code execution with persistence on the target system through maliciously crafted CIP messages. This includes t

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.