CVE-2023-28831 HIGH

CVE-2023-28831

Vendor Siemens
Product SIMATIC BRAUMAT
Weakness CWE-190
Published September 12, 2023
Last update November 11, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

Key dates

02Disclosure timeline

September 12, 2023 CVE published
November 11, 2025 Record updated