CVE-2018-7559
5.3 · MEDIUMOverview
CVE-2018-7559 is a medium-severity vulnerability affecting opcfoundation ua-.net-legacy. It was published on June 13, 2018 and has a CVSS 3.0 base score of 5.3 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack.
Remediation
Check the references section for vendor advisories and patches from opcfoundation. Update ua-.net-legacy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| opcfoundation | ua-.net-legacy | 0 | Affected |
| opcfoundation | ua-.netstandard | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2018-7559?
CVE-2018-7559 is a medium-severity vulnerability affecting opcfoundation ua-.net-legacy. It was published on June 13, 2018 and has a CVSS 3.0 base score of 5.3 (MEDIUM).
How severe is CVE-2018-7559?
This vulnerability has a CVSS 3.0 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2018-7559?
Check the references section for vendor advisories and patches from opcfoundation. Update ua-.net-legacy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2018-7559?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-7559 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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