CVE-2026-82946 — MEDIUM (6.5)

Vulnerability 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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-690 CWE-476

References

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

FAQ

What is CVE-2026-82946?

CVE-2026-82946 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 ...

How severe is CVE-2026-82946?

CVE-2026-82946 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-82946?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.