Security news aggregator

Latest coverage for 0-Day

A 0-Day is a software vulnerability without an available fix, creating risk because defenders have limited time to mitigate exploitation.

1 headlines in this view

Refine the feed

Search across headline titles and summaries.

Tag briefing

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.

Showing 1 most recent headlines Filtered view
Krebs on Security 3 months ago

Patch Tuesday, April 2026 Edition

Microsoft today pushed software updates to fix a staggering 167 security vulnerabilities in its Windows operating systems and related software, including a SharePoint Server zero-day and a publicly disclosed weakness in Windows Defender dubbed "BlueHammer." Separately, Google Chrome fixed its fourth zero-day of 2026, and an emergency update for Adobe Reader nixes an actively exploited flaw that can lead to remote code execution.

Krebs on Security 15 Apr 2026, 9:47 a.m. 0-Day Adobe Chrome Disclosure Fixed Flaw Google Microsoft Patch Patch Tuesday Remote Code Execution Vulnerability