VULNERABILITY INTELLIGENCE

CVE-2023-28831

CVSS score8.7 HIGH

EPSS probability1.13%

CISA KEVNot currently listed

Published2023-09-12

Last modified2026-06-17

Description

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.