CVE-2026-70388
Memory Corruption via Integer Underflow in Message Length Validation
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| SOEM RT-Labs AB |
≥ 0; < 2.0.1 (affected, semver)
Other versions: unaffected |
CNA: ENISA |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.3 high |
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H | CNA: ENISA |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdfCNA: ENISA · vendor-advisory
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