The vulnerability of the FortiCloud SSO authentication mechanism affects operating systems based on FortiOS, the Fortinet FortiManager device management software, the FortiAnalyzer event monitoring and analysis software, and the FortiProxy proxy server used for protecting against internet attacks. This vulnerability allows a perpetrator to gain unauthorized access to the device.

FortiCloud authentication flaw enables bypass on FortiOS based systems, FortiManager, FortiAnalyzer, and FortiProxy, risking remote access.

Reporter	Title	Published	Views	Family All 28
ATTACKERKB	CVE-2026-24858	27 Jan 202619:18	–	attackerkb
Circl	CVE-2026-24858	27 Jan 202620:18	–	circl
CISA KEV Catalog	Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability	27 Jan 202600:00	–	cisa_kev
CISA	Fortinet Releases Guidance to Address Ongoing Exploitation of Authentication Bypass Vulnerability CVE-2026-24858	28 Jan 202612:00	–	cisa
CISA	CISA Adds One Known Exploited Vulnerability to Catalog	27 Jan 202612:00	–	cisa
CNNVD	Fortinet’s various products have security vulnerabilities	27 Jan 202600:00	–	cnnvd
CVE	CVE-2026-24858	27 Jan 202619:18	–	cve
Cvelist	CVE-2026-24858	27 Jan 202619:18	–	cvelist
EUVD	EUVD-2026-15989	25 Mar 202621:30	–	euvd
EUVD	EUVD-2026-4712	27 Jan 202619:18	–	euvd