CVE-2023-23588

Local traffic decryption via shared TLS private key

Published Apr 11, 2023 · Updated Oct 15, 2024

Information exposure in Siemens SIMATIC IPC devices allows local users to decrypt intercepted maxView management traffic. The bundled Adaptec maxView application reuses one hard-coded TLS certificate and private key across installations for HTTPS between the local browser and service. Access to local traffic and the shared key enables reading or modifying data in transit; E models are affected on Windows before 4.09.00.25611, while all listed D models and IPC1047 versions are affected.

CVSS severity6.2
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Siemens SIMATIC IPC devices allows local users to decrypt intercepted maxView management traffic. The bundled Adaptec maxView application reuses one hard-coded TLS certificate and private key across installations for HTTPS between the local browser and service. Access to local traffic and the shared key enables reading or modifying data in transit; E models are affected on Windows before 4.09.00.25611, while all listed D models and IPC1047 versions are affected.

The record

CVE
CVE-2023-23588
Published
Apr 11, 2023
Updated
Oct 15, 2024
Vendor
Siemens
Product
SIMATIC IPC1047
Classifications
CWE-295, CWE-200, T1557
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=All versions

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · SIMATIC IPC1047version=All versions
Siemens · SIMATIC IPC847Eversion=All versions with maxView Storage Manager < 4.09.00.25611 on Windows
Siemens · SIMATIC IPC647Dversion=All versions
Siemens · SIMATIC IPC1047Eversion=All versions with maxView Storage Manager < 4.09.00.25611 on Windows
Siemens · SIMATIC IPC847Dversion=All versions
Siemens · SIMATIC IPC647Eversion=All versions with maxView Storage Manager < 4.09.00.25611 on Windows

Published CVSS scores

6.3NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
6.2Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1557Adversary-in-the-Middle

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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