What is CVE-2022-31807?

CVE-2022-31807 is a medium-severity vulnerability in Siemens Building X - Security Manager Edge Controller (Acc-Ap), classified under Improper Verification of Cryptographic Signature. CVSS score: 6.2/10. Published 2025-05-23.

How severe is CVE-2022-31807?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Vulnerability in Siemens Building X - Security Manager Edge Controller (Acc-Ap)

CVE-2022-31807

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".

EPSS: 0.001 (4.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

productcert@siemens.com (Vendor Advisory)
productcert@siemens.com

Frequently asked questions

What is CVE-2022-31807?: CVE-2022-31807 is a medium-severity vulnerability in Siemens Building X - Security Manager Edge Controller (Acc-Ap), classified under Improper Verification of Cryptographic Signature. CVSS score: 6.2/10. Published 2025-05-23.
How severe is CVE-2022-31807?: Medium severity. CVSS v3 base score is 6.2 out of 10.