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CVE-2025-40556

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CVE-2025-40556

Published: May 13, 2025

Modified: May 13, 2025

PUBLISHED

CVSS v3.1

6.5

MEDIUM

Description

A vulnerability has been identified in BACnet ATEC 550-440 (All versions), BACnet ATEC 550-441 (All versions), BACnet ATEC 550-445 (All versions), BACnet ATEC 550-446 (All versions). Affected devices improperly handle specific incoming BACnet MSTP messages. This could allow an attacker residing in the same BACnet network to send a specially crafted MSTP message that results in a denial of service condition of the targeted device. A power cycle is required to restore the device's normal operation.

VendorProductVersions

Siemens

BACnet ATEC 550-440

affected
0 - < *

Siemens

BACnet ATEC 550-441

affected
0 - < *

Siemens

BACnet ATEC 550-445

affected
0 - < *

Siemens

BACnet ATEC 550-446

affected
0 - < *

Weaknesses (CWE)

CWE-20

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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