Which of the following findings would MOST likely indicate a high risk in a vulnerability assessment report?

TCP port 443 is the standard port for HTTPS traffic and its presence is expected and normal in most environments, representing legitimate encrypted web communication rather than a vulnerability.

A non-standard system naming convention is an administrative or compliance concern related to asset management hygiene, but it does not directly introduce a security vulnerability or exploitable attack surface.

Unlicensed software is primarily a legal and compliance risk (software licensing violation) rather than a direct security vulnerability, and would typically appear in a compliance audit rather than as a high-risk security finding.

An end-of-life system is no longer supported by its vendor, meaning critical security patches and updates are no longer issued. Any newly discovered vulnerabilities in that system will remain unpatched indefinitely, making it a prime target for exploitation. This is classified as high risk in vulnerability assessments because the exposure cannot be remediated through patching alone.