SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-16744

A path traversal vulnerability in Tridium Niagara AX Versions 3.8 and prior and Niagara 4 systems Versions 4.4 and prior installed on Microsoft Windows Systems can be exploited by leveraging valid platform (administrator) credentials.

HIGH 7.2EPSS 6.14%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (6.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A path traversal vulnerability in Tridium Niagara AX Versions 3.8 and prior and Niagara 4 systems Versions 4.4 and prior installed on Microsoft Windows Systems can be exploited by leveraging valid platform (administrator) credentials.

CVSS 3.0
7.2 HIGHCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
6.14% probability · 93th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-22
Affected
tridium/niagara · tridium/niagara ax framework
Source
ics-cert@hq.dhs.gov
EPSS trend
0%5%10%21 September 2026: 4.79%22 September 2026: 6.22%27 October 2026: 6.14%21 September 202627 October 2026

EPSS moved from 4.8% on 21 September 2026 to 6.1% on 27 October 2026, peaking at 6.2% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.