Detections
Analytics

Siemens APE1808 Inconsistent Interpretation of HTTP Requests (CVE-2025-55018)

medium Tenable OT Security Plugin ID 505305

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4.3 through 6.4.16 may allow an unauthenticated attacker to smuggle an unlogged http request through the firewall policies via a specially crafted header

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-975644.html

https://www.cisa.gov/news-events/ics-advisories/icsa-26-071-02

Plugin Details

Severity: Medium

ID: 505305

File Name: tenable_ot_siemens_CVE-2025-55018.nasl

Version: 1.3

Type: Remote

Family: Tenable.ot

Published: 3/23/2026

Updated: 4/1/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 1.6

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.1

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

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

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: 3/10/2026

Vulnerability Publication Date: 2/10/2026

Reference Information

CVE: CVE-2025-55018

CWE: 444

ICSA: 26-071-02