Vulnerability · Published Oct 26, 2026 · Assigned by ENISA
CVE-2026-82943Out-of-Bounds Read via Unchecked Length Values
Medium 6.5
In plain English
A medium-severity out-of-bounds read in SOEM from RT-Labs AB. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Official description
SOEM version 2.0.0 and earlier contains vulnerabilities where a malicious device can send messages that cause the master to read data from memory locations beyond the intended buffer. The software uses length values from device responses without validating them against actual buffer sizes. An attacker can exploit this to extract up to 64KB of data from the master's memory.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| RT-Labs AB | SOEM | 0 – before 2.0.1 |
Weakness: CWE-125, CWE-195, CWE-200 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N