CVE-2026-82944 Buffer Overflow in CoE SDO Upload Multi-Segment Data Transfers
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-82944?
CVE-2026-82944 is a high-severity vulnerability in RT-Labs AB SOEM, published on 26 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-82944?
How do I fix CVE-2026-82944?
No fix has been published for CVE-2026-82944 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82944 being exploited?
There is no known exploitation of CVE-2026-82944 in the wild and no public exploit code.
Sources
Also known as GHSA-55h8-h3gv-wfcx.