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I. Basic Information for CVE-2025-40556
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Siemens BACnet ATEC 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens BACnet ATEC(Siemens BACnet Advanced Terminal Equipment Controller)是德国西门子(Siemens)公司的一个楼宇自动化终端设备控制器。 Siemens BACnet ATEC存在输入验证错误漏洞,该漏洞源于处理特定BACnet MSTP消息不当,可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
SiemensBACnet ATEC 550-440 0 ~ * -
SiemensBACnet ATEC 550-441 0 ~ * -
SiemensBACnet ATEC 550-445 0 ~ * -
SiemensBACnet ATEC 550-446 0 ~ * -
II. Public POCs for CVE-2025-40556
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III. Intelligence Information for CVE-2025-40556
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IV. Related Vulnerabilities
V. Comments for CVE-2025-40556

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