What’s Vulnerable › Vulnerabilities
CVE-2026-82944: Buffer Overflow in CoE SDO Upload Multi-Segment Data Transfers
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-26 · updated 2026-10-26
- Weakness: CWE-120
Description
SOEM version 2.0.0 and earlier contains a vulnerability in multi-segment data transfers where a malicious device can overflow memory buffers. The software checks the total size only once at the beginning, but doesn't track the cumulative size as multiple segments arrive. An attacker can declare a small initial size to pass validation, then send additional segments that exceed the allocated buffer. This allows the attacker to write controlled data beyond buffer boundaries, potentially enabling code execution.
Affected products
- RT-Labs AB SOEM: before 2.0.1 — fixed in 2.0.1
How to fix
Upgrade to a fixed version: RT-Labs AB SOEM 2.0.1. Check the vendor advisory for mitigations.
References
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