Description
A vulnerability has been identified in Building X - Security Manager Edge Controller (ACC-AP) (All versions). Affected devices do not properly check the integrity of firmware updates. This could allow a local attacker to upload a maliciously modified firmware onto the device. In a second scenario, a remote attacker who is able to intercept the transfer of a valid firmware from the server to the device could modify the firmware "on the fly".
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | Building X - Security Manager Edge Controller (ACC-AP) | — | — |
Advisories 5
- NCSC-2025-0382 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Dec 9, 2025
- ICSA-25-345-07 Siemens Building X - Security Manager Edge Controller CISA ICS & IT advisories · Dec 9, 2025
- SSA-420375 SSA-420375: Improper Integrity Check of Firmware Updates in Building X - Security Manager Edge Controller (ACC-AP) Siemens ProductCERT · Dec 9, 2025
- ICSA-25-148-01 Siemens SiPass CISA ICS & IT advisories · Oct 14, 2025
- SSA-367714 SSA-367714: Improper Integrity Check of Firmware Updates in SiPass integrated AC5102 / ACC-G2 and ACC-AP Siemens ProductCERT · Oct 14, 2025