---
title: "CVE-2026-70388: SOEM - Buffer Overflow"
description: "SOEM <= 2.0.0 contains a buffer overflow caused by improper validation of message length values, letting a malicious device on the network execute arbitrary code on the master system, exploit requires network access."
url: https://panop.io/threat-heartbeat/CVE-2026-70388/
---

# CVE-2026-70388 SOEM - Buffer Overflow

SOEM <= 2.0.0 contains a buffer overflow caused by improper validation of message length values, letting a malicious device on the network execute arbitrary code on the master system, exploit requires network access.

CVSS base score 8.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-70388)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

Published

26 October 2026

Updated

26 October 2026

Weakness

[CWE-191](https://cwe.mitre.org/data/definitions/191.html)

## Vendor fix

Update to the latest version beyond 2.0.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-70388](https://nvd.nist.gov/vuln/detail/CVE-2026-70388)
- [https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf](https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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