CVE-2023-25556 | BDVDB-2026-200491 Detail

Schneider ElectricMerten INSTABUS Tastermodul 1fach System M 625199

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact high, availability impact high. Attack vector: adjacent.

Weaknesses#

CWE-287 Improper Authentication

References#

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-045-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-045-03.pdf

Exploit#

No public exploit known

History#

Version 12023-04-18Record published in the CVE List.
Version 22025-02-05Most recent update recorded in the CVE List.

Published

Published: 2023-04-18
Last modified: 2025-02-05

Vendor information

Vendor: Schneider Electric
Product: Merten INSTABUS Tastermodul 1fach System M 625199

All Schneider Electric vulnerabilities

Score

8.3 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 29.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Program Version 1.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.3 High

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

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).