CVE-2023-36859Network attack vector

Authenticated command execution via unsanitized user input

Published Jul 6, 2023 · Updated Nov 14, 2024

Code injection in PiiGAB M-Bus SoftwarePack 900S allows remote authenticated users to execute arbitrary commands over the network. Public advisories identify inadequate input sanitization but do not disclose the affected input field, request handler, or command invocation. Low-privileged gateway access is required, and successful injection can compromise data or interrupt gateway operation.

CVSS severity8.8
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in PiiGAB M-Bus SoftwarePack 900S allows remote authenticated users to execute arbitrary commands over the network. Public advisories identify inadequate input sanitization but do not disclose the affected input field, request handler, or command invocation. Low-privileged gateway access is required, and successful injection can compromise data or interrupt gateway operation.

The record

CVE
CVE-2023-36859
Published
Jul 6, 2023
Updated
Nov 14, 2024
Vendor
PiiGAB
Product
M-Bus SoftwarePack
Classifications
CWE-94, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 14, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=900S

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PiiGAB · M-Bus SoftwarePackversion=900S
PiiGAB · PiiGAB M-Bus 900Sversion=900s

Published CVSS scores

8.8ICS-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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