CVE-2026-70388: high-severity vulnerability in RT-Labs AB SOEM
Memory Corruption via Integer Underflow in Message Length Validation
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.3epss 0.2%
SOEM version 2.0.0 and earlier contains vulnerabilities where a malicious device on the network can send specially crafted messages that cause the master to write data outside allocated memory boundaries. The software performs arithmetic on message length values without proper validation, allowing negative or extremely large values to bypass safety checks. This can corrupt memory and potentially allow an attacker to execute arbitrary code on the master system.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Affected products
RT-Labs AB · SOEMRelated CVEs — RT-Labs AB SOEM
In the same product, most dangerous first.
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-2026-82945MEDIUMMemory Corruption via FMMU Configuration Table OverflowEPSS 0.2%CVE-2026-82943MEDIUMOut-of-Bounds Read via Unchecked Length ValuesEPSS 0.2%