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Fencer Intel
medium 6.5

CVE-2026-82943 json

Out-of-Bounds Read via Unchecked Length Values

published 16d ago modified 16d ago also EUVD-2026-109669

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

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.

Patch / fix

  • RT-Labs AB SOEM 2.0.1

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16d ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • RT-Labs AB SOEM

Classification

Weakness
  • CWE-125 Out-of-bounds Read
  • CWE-195 Signed to Unsigned Conversion Error
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.