Detections
Analytics
Siemens APE1808 Improper Certificate Validation (CVE-2026-0228)
medium Tenable OT Security Plugin ID 505265
Synopsis
The remote OT asset is affected by a vulnerability.Description
An improper certificate validation vulnerability in PAN-OS allows users to connect Terminal Server Agents on Windows to PAN-OS using expired certificates even if the PAN-OS configuration would not normally permit them to do so.This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
Refer to the vendor advisory.See Also
https://cert-portal.siemens.com/productcert/html/ssa-513708.html
Plugin Details
Severity: Medium
ID: 505265
File Name: tenable_ot_siemens_CVE-2026-0228.nasl
Version: 1.2
Type: remote
Family: Tenable.ot
Published: 3/23/2026
Updated: 3/24/2026
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
CVSS v3
Risk Factor: Medium
Base Score: 5
Temporal Score: 4.4
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 5.3
Threat Score: 1.3
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N
Vulnerability Information
CPE: cpe:/o:siemens:ruggedcom_ape1808_firmware
Required KB Items: Tenable.ot/Siemens
Exploit Ease: No known exploits are available
Patch Publication Date: 6/10/2025
Vulnerability Publication Date: 6/10/2025
Reference Information
CVE: CVE-2026-0228
CWE: 295