Tridium Niagara Improper Authorization (CVE-2019-13528)

medium Tenable OT Security Plugin ID 500888


The remote OT asset is affected by a vulnerability.


A specific utility may allow an attacker to gain read access to privileged files in the Niagara AX 3.8u4 (JACE 3e, JACE 6e, JACE 7, JACE-8000), Niagara 4.4u3 (JACE 3e, JACE 6e, JACE 7, JACE-8000), and Niagara 4.7u1 (JACE-8000, Edge 10).

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

Tridium has released updates that mitigate these vulnerabilities and recommends users update to the versions identified below:

- Niagara AX 3.8u4:
- OS Dist: 2.7.402.2
- NRE Config Dist: 3.8.401.1
- Niagara 4.4u3:
- OS Dist: NRE Config
- Dist:
- Niagara 4.7u1:
- OS Dist: (JACE 8000)
- OS Dist (Edge 10):
- NRE Config Dist:

Updates are available by contacting the sales support channel or by contacting the Tridium support team at [email protected]

All Tridium Niagara users for all supported platforms are encouraged to update their systems with these releases to mitigate risk. For further guidance, please contact a Tridium account manager or Customer Support.

In addition to updating to the latest version, Tridium recommends users with affected products take the following steps:

- Review and validate the list of authorized users who can authenticate to Niagara.
- Allow only trained and trusted persons to have physical access to the system, including devices with connection to the system though the Ethernet port.
- If remote connections to the network are required, consider using a VPN or other means to ensure secure remote connections into the network.

For more information please refer to:

- Security Bulletin# SB 2019-Tridium-3
- BlackBerry’s Security Advisory QNX-2019-001

See Also

Plugin Details

Severity: Medium

ID: 500888

Version: 1.8

Type: remote

Family: Tenable.ot

Published: 3/21/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2019-13528


Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.9

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

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

Vulnerability Information

CPE: cpe:/a:tridium:niagara4:4.4u3, cpe:/a:tridium:niagara4:4.7u1, cpe:/a:tridium:niagara_ax:3.8u4

Required KB Items: Tenable.ot/assetBag

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2019

Vulnerability Publication Date: 9/24/2019

Reference Information

CVE: CVE-2019-13528