CVE-2023-29241Network attack vector

Unauthorized share access via incorrect permission guidance

Published Jun 30, 2023 · Updated Nov 26, 2024

Incorrect access-control guidance in Bosch Building Integration System 5.0 allows remote attackers to read or write data through the MgtS share. The Cybersecurity Guidebook's section 4.5 names the broad Windows Network group instead of Network Service when defining the shared folder's ACL. Exposure requires an installer to follow the older guide; affected permissions grant potentially unauthorized users read and write access without interrupting service.

CVSS severity8.1
High
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

Incorrect access-control guidance in Bosch Building Integration System 5.0 allows remote attackers to read or write data through the MgtS share. The Cybersecurity Guidebook's section 4.5 names the broad Windows Network group instead of Network Service when defining the shared folder's ACL. Exposure requires an installer to follow the older guide; affected permissions grant potentially unauthorized users read and write access without interrupting service.

The record

CVE
CVE-2023-29241
Published
Jun 30, 2023
Updated
Nov 26, 2024
Vendor
Bosch Security Systems B.V.
Product
Building Integration System
Classifications
CWE-1112, T1039
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 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=5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Bosch Security Systems B.V. · Building Integration Systemversion=5.0

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.1Robert Bosch GmbHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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.

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No observations available

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

Weakness, pattern, technique

CWE-1112Incomplete Documentation of Program Execution
T1039Data from Network Shared Drive

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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