unpatched

Not fitted with patches.

ragged, unpatched jeans

For which a patch is not yet available.

2007, Harris et al, Gray Hat Hacking: The Ethical Hacker's Handbook Microsoft is actually pretty good about warning users about active attacks abusing unpatched vulnerabilities in Internet Explorer.

Not patched; to which a patch has not been applied.

When working with kernel patches, it's a good idea to apply them to a clean, unpatched kernel.