Information disclosure in Unified Automation .NET based OPC UA Client/Server SDK Bundle - CVE-2021-27434
Published: May 14, 2021
Vulnerability identifier: #VU53245
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-27434
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the OPC UA .NET Framework. A remote attacker can gain unauthorized access to sensitive information on the system.
Note: This vulnerability affects the following OPC UA products:
Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only)
Affected software
Unified Automation .NET based OPC UA Client/Server SDK Bundle
How to mitigate CVE-2021-27434
Install updates from vendor's website.