Siemens SIMATIC and SCALANCE Multiple Releases of Same Resource or Handle (CVE-2025-0665)

high Tenable OT Security Plugin ID 504233

Synopsis

The remote OT asset is affected by a vulnerability.

Description

libcurl would wrongly close the same eventfd file descriptor twice when taking down a connection channel after having completed a threaded name resolve.

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.

Plugin Details

Severity: High

ID: 504233

File Name: tenable_ot_siemens_CVE-2025-0665.nasl

Version: 1.3

Type: remote

Family: Tenable.ot

Published: 11/13/2025

Updated: 3/5/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v3

Risk Factor: High

Base Score: 7.3

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

Vulnerability Information

CPE: cpe:/o:siemens:scalance_xc-400_series_firmware, cpe:/o:siemens:scalance_xr-300_series_firmware, cpe:/o:siemens:scalance_xc-300_series_firmware, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.1.5, cpe:/o:siemens:scalance_xr-500wg_series_firmware, cpe:/o:siemens:scalance_xr-500_series_firmware, cpe:/o:siemens:siplus_s7-1500_cpu_firmware:3.1.5

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/12/2023

Vulnerability Publication Date: 12/12/2023

Reference Information

CVE: CVE-2025-0665

CWE: 1341

ICSA: 26-043-06

Detections

Analytics