CVE-2023-49621 CRITICAL

CVE-2023-49621

Vendor Siemens
Product SIMATIC CN 4100
Weakness CWE-1392
Published January 9, 2024
Last update June 17, 2025
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

What the vulnerability does

01Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

Key dates

02Disclosure timeline

January 9, 2024 CVE published
June 17, 2025 Record updated