CVE-2022-31807

medium

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".

References

References
More

https://www.cisa.gov/news-events/ics-advisories/icsa-25-345-07

https://www.cisa.gov/news-events/ics-advisories/icsa-25-148-01

https://cert-portal.siemens.com/productcert/html/ssa-420375.html

https://cert-portal.siemens.com/productcert/html/ssa-367714.html

Details

Source: Mitre, NVD

Published: 2025-05-23

Updated: 2025-12-09

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Severity: Medium

CVSS v4

Base Score: 5.9

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00022