A zero-day exploit is a cyberattack targeting a software vulnerability unknown to vendors or the public, leaving developers with no time to create a fix before attackers strike unsuspecting systems.
Attackers weaponize undisclosed software flaws by crafting specialized exploit code that triggers unauthorized actions like arbitrary code execution or privilege escalation on unpatched systems before security teams can respond.
Zero-day exploits let threat actors breach systems invisibly, bypassing existing defenses to execute malicious code, steal data, establish persistent access, or compromise high-value targets without triggering security alerts.
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