Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-27434 |
CWE-ID | CWE-200 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Unified Automation .NET based OPC UA Client/Server SDK Bundle Server applications / Other server solutions |
Vendor | Unified Automation GmbH |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU53245
Risk: Medium
CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-27434
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe 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)
MitigationInstall updates from vendor's website.
Vulnerable software versionsUnified Automation .NET based OPC UA Client/Server SDK Bundle: 3.0.7
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-133-04
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.