vulner-

(Latin: wound, wounding, woundable; from vulnus, "wound"; by extension: hurt; injure, injury; tear, gash; damage)

vulnerary (s) (noun), vulneraries (pl)
A remedy used in healing or treating wounds: Any preparation, plant, or drug that is used in the cure of wounds; for example, Native Americans used the herb echinacea as a vulnerary for burns, snakebites, arrow, and other wounds and it was considered something of a panacea.

vulnerate (verb), vulnerates; vulnerated; vulnerating
To wound or to hurt someone.
Vulneratus non victus. (Latin proverb)
Translation: "Wounded but not conquered."

Another version is, "Bloodied but unbowed."

window of vulnerability (s) (noun), windows of vulnerability (pl)
A time frame within which defensive measures by the armed forces are reduced, compromised, or lacking: The window of vulnerability is used with reference to military defenses of strategic assets, and also by analogy in computer software to a "vulnerability" which is open to exploitation by hackers.

Cross references of word families that are related directly, or indirectly, to: "wound, harm, hurt, injure": noci-; nox-; traumat-.