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M Bus 900S Firmware CVE-2023-35987

CRITICAL
Use of Hard-coded Credentials (CWE-798)
2023-07-06 ics-cert@hq.dhs.gov
Authentication Bypass M Bus 900S Firmware
9.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
CVE Published
Jul 06, 2023 - 23:15 nvd
CRITICAL 9.8

DescriptionNVD

PiiGAB M-Bus contains hard-coded credentials which it uses for authentication.

AnalysisAI

PiiGAB M-Bus contains hard-coded credentials which it uses for authentication. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Use of Hard-coded Credentials (CWE-798), which allows attackers to gain access using credentials embedded in source code. PiiGAB M-Bus contains hard-coded credentials which it uses for authentication. Affected products include: Piigab M-Bus 900S Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Remove hard-coded credentials, use environment variables or secrets management, rotate exposed credentials immediately.

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Same weakness CWE-798 – Use of Hard-coded Credentials

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CVE-2023-35987 vulnerability details – vuln.today
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