Latest cybersecurity reporting from selected sources.

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.

Microsoft today issued software updates to fix at least five dozen security holes in Windows and supported software, including patches for two zero-day vulnerabilities that are already being exploited. Also, Adobe, Google Chrome and Apple iOS users may have their own zero-day patching to do.

The US Cybersecurity and Infrastructure Security Agency (CISA) has added nine new flaws to its collection of actively exploited vulnerabilities, including two recently patched zero-days impacting Google Chrome and Adobe Commerce/Magento Open Source. [...]

The US Cybersecurity and Infrastructure Security Agency (CISA) has added nine new flaws to its collection of actively exploited vulnerabilities, including two recently patched zero-days impacting Google Chrome and Adobe Commerce/Magento Open Source. [...]

Zero-day buses: none for a while, then three at once. Here's Google joining Apple and Adobe in "zero-day week"