Microsoft has confirmed that a staggering three zero-day cyberattacks are underway against Windows users—here’s what you need to know.

Fortinet firewalls running firmware versions 7.0.14-7.0.16 targeted by attackers using zero-day vulnerabilities.

Attackers are exploiting a new authentication bypass zero-day vulnerability in FortiOS and FortiProxy to hijack Fortinet firewalls and breach enterprise networks.

Fortinet patches critical vulnerabilities, including a zero-day that has been exploited in the wild since at least November 2024.

Security researchers say "tens" of Fortinet devices have been compromised so far as part of the weeks-long hacking campaign.

The advisory from the cybersecurity company follows a report from security researchers who observed exploits in the wild in early December as part of a widespread campaign.