Microsoft released out-of-band patches for an actively exploited Microsoft Office zero-day, CVE-2026-21509, a security ...

Microsoft has released emergency security updates to patch a high-severity Office zero-day vulnerability exploited in attacks ...

Zero-day attacks have become a significant concern in the realm of cybersecurity, posing a formidable challenge to individuals and organizations alike. These attacks exploit vulnerabilities that are ...

Cisco finally patched a maximum-severity AsyncOS zero-day exploited in attacks targeting Secure Email Gateway (SEG) appliances since November 2025.

Cisco released fixes for CVE-2025-20393, a CVSS 10.0 zero-day RCE flaw in AsyncOS exploited by a China-linked APT via email security appliances.

Of the 134 Windows security flaws fixed by Microsoft in yesterday’s Patch Tuesday updates, only one was a zero-day flaw that could be potentially exploited by hackers in order to gain system ...

Apple Inc. has released an emergency security update to address a zero-day vulnerability in its ImageIO framework that has been actively exploited in the wild. A zero-day is a previously unknown ...

Cisco has released urgent security updates to patch a critical zero-day vulnerability in its Unified Communications and Webex ...

Google has released an urgent update for its Chrome browser to fix a newly discovered zero-day security flaw that hackers are already exploiting. This is the sixth zero-day Chrome has faced this year, ...

Cisco has confirmed a new IOS and IOS XE zero-day, the latest in a string of flaws that attackers have been quick to weaponize.… Cisco's IOS, the networking software workhorse running across countless ...

The Google Threat Intelligence Group today released its annual 2024 zero-day trends report, surprisingly finding that there was a reduction in zero-day threats exploited in the wild last year despite ...

In early 2016, the Federal Bureau of Investigation reportedly paid more than $1.3 million for a software flaw that allowed it ...