Fortinet Warns of Critical Flaw After FortiCloud SSO Exploitation
Fortinet is rolling out updates for CVE-2026-24858, with fixes for some versions available as of Tuesday, and others in releases that are upcoming at an unspecified date.
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Fortinet is rolling out updates for CVE-2026-24858, with fixes for some versions available as of Tuesday, and others in releases that are upcoming at an unspecified date.
This activity shares some similarities with a campaign that researchers at Arctic Wolf identified in December. That campaign started soon after Fortinet disclosed two authentication bypass flaws (CVE-2025-59718 and CVE-2025-59719).
That vulnerability (CVE-2025-64446) affects several versions of FortiWeb and CISA has added it to its Known Exploited Vulnerabilities catalog.