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Unpatched software is a computer code containing known security weaknesses. Unpatched vulnerabilities refer to weaknesses that allow attackers to leverage a known security bug that has not been patched by running malicious code. Software vendors write additions to the codes, known as “patches,” when they come to know about these application vulnerabilities to secure these weaknesses.
Adversaries often probe into your software, looking for unpatched systems and attacking them directly or indirectly. It is risky to run unpatched software. This is because attackers get the time to become aware of the software’s unpatched vulnerabilities before a patch emerges.