Auth bypass in Schneider Electric Merten Instabus Tastermodul 1fach System M 625199

CVE-2023-25556

A CWE-287: Improper Authentication vulnerability exists that could allow a device to be compromised when a key of less than seven digits is entered and the attacker has access to the KNX installation.

Vulnerability class: Broken Authentication

EPSS: 0.004 (28.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-25556?
CVE-2023-25556 is a high-severity vulnerability in Schneider Electric Merten Instabus Tastermodul 1fach System M 625199, classified under Improper Authentication. CVSS score: 8.3/10. Published 2023-04-18.
How severe is CVE-2023-25556?
High severity. CVSS v3 base score is 8.3 out of 10.