CVE-2023-36380Network attack vector

SSH access via hard-coded authorized key

Published Oct 10, 2023 · Updated Feb 27, 2025

Hard-coded credentials in Siemens SICAM A8000 CP-8031 and CP-8050 before CPCI85 V05.11 allow remote attackers to log in over SSH. The firmware places a fixed public-key identity in SSH authorized_keys, so possession of the matching private key satisfies SSH authentication. Exposure requires activated debug support; successful access grants an SSH session with the identity's privileges.

CVSS severity9.8
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in Siemens SICAM A8000 CP-8031 and CP-8050 before CPCI85 V05.11 allow remote attackers to log in over SSH. The firmware places a fixed public-key identity in SSH authorized_keys, so possession of the matching private key satisfies SSH authentication. Exposure requires activated debug support; successful access grants an SSH session with the identity's privileges.

The record

CVE
CVE-2023-36380
Published
Oct 10, 2023
Updated
Feb 27, 2025
Vendor
Siemens
Product
SICAM A8000 CP-8050 Master Module
Classifications
CWE-798, T0859
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 2025Record 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=All versions < CPCI85 V05.11 (only with activated debug support)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · SICAM A8000 CP-8050 Master Moduleversion=All versions < CPCI85 V05.11 (only with activated debug support)
Siemens · SICAM A8000 CP-8031 Master Moduleversion=All versions < CPCI85 V05.11 (only with activated debug support)

Published CVSS scores

9.8Siemens AGCVSS: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T0859Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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