Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2022-22825)

high Tenable OT Security Plugin ID 504022

Synopsis

The remote OT asset is affected by a vulnerability.

Description

lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

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: 504022

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 11/13/2025

Updated: 11/13/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.1.5, 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: 6/14/2022

Vulnerability Publication Date: 6/14/2022

Reference Information

CVE: CVE-2022-22825

CWE: 190

Detections

Analytics