Siemens SIMATIC S7-1500 Generation of Error Message Containing Sensitive Information (CVE-2018-12886)

high Tenable OT Security Plugin ID 504085

Synopsis

The remote OT asset is affected by a vulnerability.

Description

stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in function.c in GNU Compiler Collection (GCC) 4.1 through 8 (under certain circumstances) generate instruction sequences when targeting ARM targets that spill the address of the stack protector guard, which allows an attacker to bypass the protection of -fstack-protector,
-fstack-protector-all, -fstack-protector-strong, and -fstack- protector-explicit against stack overflow by controlling what the stack canary is compared against.

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: 504085

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: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/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:scalance_wum766-1_%28eu%29_firmware:2.0, cpe:/o:siemens:scalance_wam766-1_%28us%29_firmware:2.0, cpe:/o:siemens:siplus_s7-1500_cpu_firmware:3.1.5, cpe:/o:siemens:scalance_wam766-1_eec_%28eu%29_firmware:2.0, cpe:/o:siemens:scalance_wam766-1_%28eu%29_firmware:2.0, cpe:/o:siemens:scalance_wum766-1_%28us%29_firmware:2.0, cpe:/o:siemens:scalance_wam766-1_eec_%28us%29_firmware:2.0, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.1.5, cpe:/o:siemens:scalance_wum763-1_firmware:2.0, cpe:/o:siemens:scalance_wam763-1_firmware:2.0

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 3/14/2023

Vulnerability Publication Date: 3/14/2023

Reference Information

CVE: CVE-2018-12886

CWE: 209

Detections

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