CVE-2026-70388

Memory Corruption via Integer Underflow in Message Length Validation

State
Published
Severity
8.3 High
Published
Oct 26, 2026
Updated
Oct 26, 2026
Reserved
Aug 4, 2026

Read the record on cve.org

Description

SOEM version 2.0.0 and earlier contains vulnerabilities where a malicious device on the network can send specially crafted messages that cause the master to write data outside allocated memory boundaries. The software performs arithmetic on message length values without proper validation, allowing negative or extremely large values to bypass safety checks. This can corrupt memory and potentially allow an attacker to execute arbitrary code on the master system.

Scores

CVSSScoreVectorSource
3.18.3 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:HENISA

Weaknesses

  • CWE-191 Integer underflow (wrap or wraparound)
  • CWE-195 Signed to unsigned conversion error
  • CWE-787 Out-of-bounds write

Affected Products

ProductVersions
SOEMRT-Labs AB
  • before 2.0.1Affected

References

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