Quick answers
- Is CVE-2026-82944 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82944 being exploited in the wild.
- How severe is CVE-2026-82944?
- High severity, with a CVSS score of 8.8, published 26 October 2026.
- Which products and versions are affected?
- RT-Labs SOEM 2.0.0 and earlier.
- Is there a fix for CVE-2026-82944?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-82944 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-82944?
- Check whether you run RT-Labs SOEM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability exists in SOEM's multi-segment data transfer handling, where the software validates the total size only once at the start but fails to track cumulative segment sizes as they arrive. An attacker controlling a malicious EtherCAT device can bypass the initial validation by declaring a small size, then send additional segments that cause a buffer overflow when written to the undersized buffer. This allows controlled data writes beyond buffer boundaries, achieving code execution on the affected system.
Affected products
- RT-Labs SOEM 2.0.0 and earlier
Timeline
- 2026-10-26: disclosed