Detections
Analytics
Hitachi Energy Relion REB500 Product Privilege Defined with Unsafe Actions (CVE-2026-2459)
high Tenable OT Security Plugin ID 505202
Synopsis
The remote OT asset is affected by a vulnerability.Description
A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so.This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.See Also
http://www.nessus.org/u?9c6f8c2b
https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-02
Plugin Details
Severity: High
ID: 505202
File Name: tenable_ot_abb_CVE-2026-2459.nasl
Version: 1.4
Type: remote
Family: Tenable.ot
Published: 2/27/2026
Updated: 3/5/2026
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: High
Base Score: 8.5
Temporal Score: 6.3
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N
CVSS Score Source: CVE-2026-2459
CVSS v3
Risk Factor: High
Base Score: 8.1
Temporal Score: 7.1
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 7.4
Threat Score: 4.5
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/o:hitachienergy:reb500_firmware
Required KB Items: Tenable.ot/ABB
Exploit Ease: No known exploits are available
Patch Publication Date: 2/24/2026
Vulnerability Publication Date: 2/24/2026
Reference Information
CVE: CVE-2026-2459
CWE: 267