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.
Likely two separate threat actors are using the just-patched CVE-2024-38112 in targeted, concurrent infostealer campaigns.
The Problem The “2024 Attack Intelligence Report” from the staff at Rapid7 [1] is a well-researched, well-written report that is worthy of careful study. Some key takeaways are: 53% of the over 30 new vulnerabilities that were widely exploited in 2023 and at the start of 2024 were zero-days
Microsoft has addressed two actively exploited and two publicly disclosed zero-day bugs this month