CVE-2026-82946

Medium

Description

SOEM version 2.0.0 and earlier contains a vulnerability where a malicious device can crash the master system. When the software receives an error response, it clears an internal pointer but continues processing. If another message arrives before timeout, the software attempts to use the cleared pointer, causing a crash. An attacker can trigger this with a simple sequence of two messages.

SeverityMedium

CVSS6.5

Exploit probability—

ProductSOEM

PublishedOct 26, 2026

First seenOct 26, 2026

Weakness typeCWE-476NULL pointer dereference CWE-690CWE-690

How to fix

Update

RT-Labs AB SOEM2.0.1 or later

Vendor advisories

rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf

Affected products

Product	Affected versions	Fixed in
RT-Labs AB SOEM	v < 2.0.1	2.0.1

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