Rockwell Automation products using GoAhead Web Server Loop with Unreachable Exit Condition (CVE-2019-5097)

high Tenable OT Security Plugin ID 500905


The remote OT asset is affected by a vulnerability.


A denial-of-service vulnerability exists in the processing of multi- part/form-data requests in the base GoAhead web server application in versions v5.0.1, v.4.1.1 and v3.6.5. A specially crafted HTTP request can lead to an infinite loop in the process. The request can be unauthenticated in the form of GET or POST requests and does not require the requested resource to exist on the server.

Rockwell Automation is aware of multiple products that utilize the GoAhead web server application and are affected by CVE 2019-5097.

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The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at

Rockwell Automation recommends users apply the latest version of firmware when possible:

See Also

Plugin Details

Severity: High

ID: 500905

Version: 1.7

Type: remote

Family: Tenable.ot

Published: 3/28/2023

Updated: 4/11/2024

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2019-5097


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/o:rockwellautomation:controllogix_5580_firmware, cpe:/o:rockwellautomation:guardlogix_5580_firmware, cpe:/o:rockwellautomation:compactlogix_5380_firmware, cpe:/o:rockwellautomation:guardlogix_5380_firmware, cpe:/o:rockwellautomation:compactlogix_5480_firmware, cpe:/h:rockwellautomation:1747-aentr, cpe:/h:rockwellautomation:1769-aentr, cpe:/h:rockwellautomation:5069-aen2tr, cpe:/h:rockwellautomation:1756-en2f_series_c, cpe:/h:rockwellautomation:1756-en2t_series_d, cpe:/h:rockwellautomation:1756-en2tp_series_a, cpe:/h:rockwellautomation:1756-en2tr_series_c, cpe:/h:rockwellautomation:1756-en3tr_series_b, cpe:/h:rockwellautomation:1756-en2tsc_series_a, cpe:/h:rockwellautomation:1756-en2tsc_series_b, cpe:/h:rockwellautomation:1756-hist1g_series_a, cpe:/h:rockwellautomation:1756-hist2g_series_a, cpe:/h:rockwellautomation:1756-hist2g_series_b

Required KB Items: Tenable.ot/Rockwell

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/3/2019

Vulnerability Publication Date: 12/3/2019

Reference Information

CVE: CVE-2019-5097

CWE: 835