Why are known vulnerabilities a concern for unpatched systems?

Known vulnerabilities present a significant concern for unpatched systems because they can be exploited by attackers to gain unauthorized access. When a system has vulnerabilities, especially those that are well-documented and widely known, attackers can develop or utilize existing methods to target those weaknesses. This can lead to various harmful outcomes, such as data breaches, compromised systems, and the potential for further malicious activity within a network.

The exploitation of known vulnerabilities is especially concerning because it allows attackers to bypass security defenses, potentially resulting in unauthorized actions on the system or network. This includes stealing sensitive data, deploying malware, or disrupting services. Thus, timely patching and updates are crucial in maintaining security and protecting assets from exploitation.