CVE-2026-24858
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
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EPSS — probability of exploitation (30 days)
86.1%
99.7th percentile
CISA KEV
Listed
Added 2026-01-27 · patch by 2026-01-30
Weakness / dates
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Published — · modified —
Timeline
- 2026-01-27 — Added to CISA KEV (actively exploited)
- 2026-01-30 — CISA patch-by deadline
Description
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.