Wire · regulatory
FortiMail zero-day exploited in attacks as CISA urges immediate patching
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Cybersecurity
◆ Geography
United States
◆ Source
◆ Verified
Fusion42 · 3 October 2026 · Fusion42 review
A critical zero-day vulnerability in FortiMail is actively being exploited in cyber attacks, prompting the Cybersecurity and Infrastructure Security Agency (CISA) to urge immediate patching to prevent further breaches.
This Wire brief sits within Fusion42's coverage of Cybersecurity.
◆ ◆ The Wire takeaway
You must prioritise patching FortiMail immediately or risk compromise as attackers are actively exploiting this zero-day vulnerability. Delay leaves your security posture critically exposed amidst heightened government warnings.
◆ Coverage
1 source · 3 Oct 2026
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◆ Topics
Cybersecuritycybersecurityzero-dayfortimailcisa-alertpatchingvulnerability