Quick answers
- Is CVE-2026-82945 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82945 being exploited in the wild.
- How severe is CVE-2026-82945?
- Medium severity, with a CVSS score of 6.5, published 26 October 2026.
- Which products and versions are affected?
- RT-Labs SOEM 2.0.0 and earlier.
- Is there a fix for CVE-2026-82945?
- 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-2026-82945 attacked?
- It is attacked from the adjacent network, in a software library.
- Am I affected by CVE-2026-82945?
- 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
SOEM version 2.0.0 and earlier fails to bounds-check array indices when writing device configuration data to a fixed-size array of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can write beyond the array boundary, corrupting adjacent memory structures. Exploitation requires a malicious or compromised device on the EtherCAT network; no authentication is required but network adjacency is assumed.
Affected products
- RT-Labs SOEM 2.0.0 and earlier
Timeline
- 2026-10-26: disclosed