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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (27.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Schneider Electric Merten Instabus Tastermodul 1fach System M 625199 — versions Program Version 1.0
- Schneider Electric Merten Instabus Tastermodul 2fach System M 625299 — versions Program Version 1.0
- Schneider Electric Merten Jalousie-/schaltaktor Reg-K/8x/16x/10 M. Hb 649908 — versions Program Version 1.0
- Schneider Electric Merten Knx Argus 180/2,20m Up System 631725 — versions Program Version 1.0
- Schneider Electric Merten Knx Schaltakt.2x6a Up M.2 Eing. Meg6003-0002 — versions Program Version 0.1
- Schneider Electric Merten Knx Uni-Dimmaktor Ll Reg-K/2x230/300 W Meg6710-0002 — versions Program Version 1.0, Program Version 1.1
- Schneider Electric Merten Tasterschnittstelle 4fach Plus 670804 — versions Program Version 1.0, Program Version 1.2
- Schneider-Electric Merten Instabus Tastermodul 1fach System M
- Schneider-Electric Merten Instabus Tastermodul 1fach System M Firmware — versions 1.0
- Schneider-Electric Merten Instabus Tastermodul 2fach System M
Weakness classification (CWE)
References
- download.schneider-electric.com/files (Vendor Advisory)
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.