CVE-2026-82945: medium-severity vulnerability in RT-Labs AB SOEM
Memory Corruption via FMMU Configuration Table Overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.2%
SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
RT-Labs AB · SOEMRelated CVEs — RT-Labs AB SOEM
In the same product, most dangerous first.
CVE-2026-70388HIGHMemory Corruption via Integer Underflow in Message Length ValidationEPSS 0.2%CVE-2026-82944HIGHBuffer Overflow in CoE SDO Upload Multi-Segment Data TransfersEPSS 0.2%CVE-2026-82947HIGHMultiple Out-of-Bounds Reads in Frame ProcessingEPSS 0.2%CVE-2026-82946MEDIUMNull Pointer Dereference in Mailbox Error HandlingEPSS 0.2%CVE-2026-82943MEDIUMOut-of-Bounds Read via Unchecked Length ValuesEPSS 0.2%