No exploitation reportedFix available

CVE-2023-2262

Q: Is CVE-2023-2262 actively exploited?

Active exploitation of CVE-2023-2262 has not been confirmed. Its EPSS score was 1.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-2262?

CVE-2023-2262 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2023-09-20
WeaknessCWE-121 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2023-09-2016:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-2262?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-2262?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · CISA-ADP

Rockwellautomation 1756-en2f series c firmwareversion to verify

Branch	Affected	Fixed in	Source
11.2	≤ 11.002	no fix published	NVD
5.x	≥ 5.008, ≤ 5.028	no fix published	CISA-ADP
11.2	≤ 11.0002	no fix published	CISA-ADP

Rockwellautomation 1756-en2fk series c firmwareversion to verify

Branch	Affected	Fixed in	Source
11.2	≤ 11.002	no fix published	NVD
5.x	≥ 5.008, ≤ 5.028	no fix published	CISA-ADP
11.2	≤ 11.0002	no fix published	CISA-ADP

Rockwellautomation 1756-en2t series d firmwareversion to verify

Branch	Affected	Fixed in	Source
11.2	≤ 11.002	no fix published	NVD
5.x	≥ 5.008, ≤ 5.028	no fix published	CISA-ADP
11.2	≤ 11.0002	no fix published	CISA-ADP

30 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-23-264-04 CISA55 known affected
Rockwell Automation Select Logix Communication Modules
1756-EN2T Series A: <= 5.008 · 1756-EN2T Series A: 5.028 · 1756-EN2T Series B: <= 5.008 · +52 more

Full record on NVD

Fix

Vendor fix CISA ICSA-23-264-04 · 2 products1756-EN2T Series A versions 5.008 and prior and version 5.028: Update to 5.009 and 5.029 or later
Vendor fix CISA ICSA-23-264-04 · 2 products1756-EN2T Series B versions 5.008 and prior and version 5.028: Update to 5.009 and 5.029 or later
Vendor fix CISA ICSA-23-264-04 · 2 products1756-EN2T Series C versions 5.008 and prior and version 5.028: Update to 5.009 and 5.029 or later
Vendor fix CISA ICSA-23-264-04 · 1 product1756-EN2T Series D versions 11.002 and prior: Update to 11.003 or later
Vendor fix CISA ICSA-23-264-04 · 2 products1756-EN2TK Series A versions 5.008 and prior and version 5.028: Update to 5.009 and 5.029 or later
Vendor fix CISA ICSA-23-264-04 · 2 products1756-EN2TK Series B versions 5.008 and prior and version 5.028: Update to 5.009 and 5.029 or later

Advisories and patches

rockwellautomation.custhelp.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-09-25
OpenCVESSVC decisionnone—
CNACVSS 3.19.8read 2026-10-23
NVDCVSS 3.19.8read 2026-10-23
CNAweakness (CWE)CWE-121read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-09-20
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-2262?

Is CVE-2023-2262 actively exploited?

Active exploitation of CVE-2023-2262 has not been confirmed. Its EPSS score was 1.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-2262?

CVE-2023-2262 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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