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Fencer Vulns
critical 9.8

CVE-2023-2262 json

Rockwell Automation Select Logix Communication Modules Vulnerable to Email Object Buffer Overflow

published 2023-09-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-33768

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-264-04 updated cvss 9.8

Rockwell Automation Select Logix Communication Modules

  • Rockwell Automation 1756-EN2F Series A <= 5.008, 5.028 Rockwell Automation 1756-EN2F Series B <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2F Series C <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2FK Series A <= 5.008, 5.028 Rockwell Automation 1756-EN2FK Series B <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2FK Series C <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2T Series A <= 5.008, 5.028 Rockwell Automation 1756-EN2T Series B <= 5.008, 5.028 Rockwell Automation 1756-EN2T Series C <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2T Series D <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TK Series A <= 5.008, 5.028 Rockwell Automation 1756-EN2TK Series B <= 5.008, 5.028 Rockwell Automation 1756-EN2TK Series C <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TK Series D <= 11.002 Rockwell Automation 1756-EN2TP Series A <= 11.002 Rockwell Automation 1756-EN2TPK Series A <= 11.002 Rockwell Automation 1756-EN2TPXT Series A <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
show 12 more
  • Rockwell Automation 1756-EN2TR Series A <= 5.008, 5.028 Rockwell Automation 1756-EN2TR Series B <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TR Series C <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TRK Series A <= 5.008, 5.028 Rockwell Automation 1756-EN2TRK Series B <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TRK Series C <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TRXT Series A <= 5.008, 5.028 Rockwell Automation 1756-EN2TRXT Series B <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TRXT Series C <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TXT Series A <= 5.008, and 5.028 Rockwell Automation 1756-EN2TXT Series B <= 5.008, 5.028 Rockwell Automation 1756-EN2TXT Series C <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN2TXT Series D <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN3TR Series A <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN3TR Series B <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN3TRK Series A <= 5.008, 5.028
    affected: fixed in 5.009, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com
  • Rockwell Automation 1756-EN3TRK Series B <= 11.002
    affected: fixed in 11.003, mitigation “Rockwell Automation has released the following for users to apply:” literature.rockwellautomation.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Rockwell Automation 1756-EN2T Series A, B, C
  • Rockwell Automation 1756-EN2T Series D
  • Rockwell Automation 1756-EN2TK Series A, B, C
  • Rockwell Automation 1756-EN2TXT Series A, B, C
  • Rockwell Automation 1756-EN2TXT Series D
  • Rockwell Automation 1756-EN2TP Series A
  • Rockwell Automation 1756-EN2TPK Series A
  • Rockwell Auotmation 1756-EN2TPXT Series A
  • Rockwell Automation 1756-EN2TR Series A, B
  • Rockwell Automation 1756-EN2TR Series C
  • Rockwell Automation 1756-EN2TRK Series A, B
  • Rockwell Automation 1756-EN2TRK Series C
  • Rockwell Automation 1756-EN2TRXT Series A, B
  • Rockwell Automation 1756-EN2TRXT Series C
  • Rockwell Automation 1756-EN2F Series A, B
  • Rockwell Automation 1756-EN2F Series C
  • Rockwell Automation 1756-EN2FK Series A, B
  • Rockwell Automation 1756-EN2FK Series C
  • Rockwell Automation 1756-EN3TR Series A
  • Rockwell Automation 1756-EN3TR Series B
  • Rockwell Automation 1756-EN3TRK Series A
  • Rockwell Automation 1756-EN3TRK Series B
  • rockwellautomation 1756-en2fk_series_c_firmware

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.