A 0-Day is a software vulnerability without an available fix, creating risk because defenders have limited time to mitigate exploitation.
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Background for this topic.
0-Day describes a software vulnerability unknown to the software maker or unpatched when first exploited. Attackers can use these flaws immediately, as no official fix or signature exists to block the exploit. Such vulnerabilities often affect widely deployed software or hardware, making them valuable for targeted attacks or widespread campaigns.
Because defenders lack patches or reliable detection signatures initially, they must rely on anomaly detection, network monitoring, and threat intelligence to identify suspicious activity linked to 0-day exploits. Rapid patching once a fix is released is critical to reduce exposure. Tracking emerging 0-day threats helps prioritize defensive measures and informs risk management decisions in environments where unpatched vulnerabilities pose significant security risks.
The MITRE Corporation has revealed that the cyber attack targeting the not-for-profit company towards late December 2023 by exploiting zero-day flaws in Ivanti Connect Secure (ICS) involved the threat actor creating rogue virtual machines (VMs) within its VMware environment
The tech company has rolled out fixes for a type confusion vulnerability that has already been exploited by malicious actors.
Google on Thursday rolled out fixes to address a high-severity security flaw in its Chrome browser that it said has been exploited in the wild
Google has released a new emergency security update to address the eighth zero-day vulnerability in Chrome browser confirmed to be actively exploited in the wild. [...]
Rapid7 found there were more mass compromise events arose from zero-day vulnerabilities than from n-day vulnerabilities in 2023
An extensive security audit of QNAP QTS, the operating system for the company's NAS products, has uncovered fifteen vulnerabilities of varying severity, with eleven remaining unfixed. [...]