CVE-2025-40556
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.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Siemens BACnet ATEC 550-440 | 0 | — |
| Siemens BACnet ATEC 550-441 | 0 | — |
| Siemens BACnet ATEC 550-445 | 0 | — |
| Siemens BACnet ATEC 550-446 | 0 | — |
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