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.
Apple has published security updates for older iPhones and iPads to backport patches released one week ago, addressing two zero-day vulnerabilities exploited in attacks. [...]
Microsoft says a Chinese-backed threat group tracked as 'Storm-0062' (aka DarkShadow or Oro0lxy) has been exploiting a critical privilege escalation zero-day in the Atlassian Confluence Data Center and Server since September 14, 2023. [...]
Zero-day has been exploited to launch largest attacks ever seen
Microsoft today issued security updates for more than 100 newly-discovered vulnerabilities in its Windows operating system and related software, including four flaws that are already being exploited. In addition, Apple recently released emergency updates to quash a pair of zero-day bugs in iOS.
Botnet storm drowned last record with 398 million requests per second A zero-day vulnerability in the HTTP/2 protocol was exploited to launch the largest distributed denial-of-service (DDoS) attack on record, according to Cloudflare.…
Ongoing Rapid Reset DDoS flood attacks exposed organizations need to patch CVE-2023-44487 immediately to head off crippling outages and business disruption.
Today is Microsoft's October 2023 Patch Tuesday, with security updates for 104 flaws, including three actively exploited zero-day vulnerabilities. [...]
Amazon Web Services (AWS), Cloudflare, and Google on Tuesday said they took steps to mitigate record-breaking distributed denial-of-service (DDoS) attacks that relied on a novel technique called HTTP/2 Rapid Reset
A new DDoS (distributed denial of service) technique named 'HTTP/2 Rapid Reset' has been actively exploited as a zero-day since August, breaking all previous records in magnitude. [...]