CVE-2026-82945 Memory Corruption via FMMU Configuration Table Overflow
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-82945?
CVE-2026-82945 is a medium-severity vulnerability in RT-Labs AB SOEM, published on 26 Oct 2026.
Official description
SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.
Which versions are affected by CVE-2026-82945?
How do I fix CVE-2026-82945?
No fix has been published for CVE-2026-82945 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82945 being exploited?
There is no known exploitation of CVE-2026-82945 in the wild and no public exploit code.
Sources
Also known as GHSA-849v-9xpp-vgfg.