Rockwell Automation RSLinx Classic ENGINE.dll Stack Buffer Overflow (CVE-2019-6553)

High Nessus Plugin ID 123010


A SCADA application running on the remote host is affected by a remote code execution vulnerability.


The RSLinx Classic running on the remote host is affected by a remote code execution vulnerability due to a stack buffer overflow condition when handling an EtherNet/IP message received on TCP port 44818. An unauthenticated, remote attacker can exploit this issue, via a specially crafted message, to execute arbitrary code.


Patches are available for versions 4.10, 4.00.01, 3.90, 3.81, 3.80, 3.70, and 3.60. See vendor Knowledgebase Article ID 1085038 for more details.

See Also

Plugin Details

Severity: High

ID: 123010

File Name: scada_rslinx_classic_cve-2019-6553.nbin

Version: 1.6

Type: remote

Family: SCADA

Published: 2019/03/22

Updated: 2020/02/11

Dependencies: 83468

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2019-6553

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:rockwellautomation:rslinx_classic

Required KB Items: SCADA/ethernetip/cip/tcp/identity/vendorname, SCADA/ethernetip/cip/tcp/identity/name

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/03/04

Vulnerability Publication Date: 2019/03/04

Reference Information

CVE: CVE-2019-6553

BID: 107293

ICSA: 19-064-01

TRA: TRA-2019-11