ICSA-25-345-07: Siemens Building X - Security Manager Edge Controller
CISA advisory · released 2025-12-09
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 1, 2025-12-09 (final)
CISA's summary
Summary: Building X - Security Manager Edge Controller (ACC-AP) devices do not properly check the integrity of firmware updates. This could allow an attacker to upload a maliciously modified firmware onto the device. Siemens is preparing fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | Building X - Security Manager Edge Controller (ACC-AP) | vers:all/* |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2022-31807 — CVE-2022-31807 · CWE-347
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".
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
- Airbus Security: reporting the vulnerability to Siemens
The advisory's legal notice
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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