Fortinet Multiple Products: Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability
› Fortinet Multiple Products
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- started
- Jan 27, 2026
- closed
- Jan 27, 2026
- CVEs
- 1
- sources
- 3
## summary
Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices. Added to CISA KEV on 2026-01-27.
severity: Actively exploited (CISA KEV)
## cve ids[1]
## affected
- See vendor advisory / CISA notes (versions not always listed in KEV feed)
## fixed in
- See vendor advisory linked in sources
## timeline[1]
CISA added CVE-2026-24858 to the KEV catalog (due 2026-01-30).
## advisories[3]
## notes & caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).
