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CVE-2026-24858

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.5, FortiAnalyzer 7.4.0 through 7.4.9, FortiAnalyzer 7.2.0 through 7.2.11, FortiAnalyzer 7.0.0 through 7.0.15, FortiManager 7.6.0 through 7.6.5, FortiManager 7.4.0 through 7.4.9, FortiManager 7.2.0 through 7.2.11, FortiManager 7.0.0 through 7.0.15, FortiNAC-F 7.6.3 through 7.6.5, FortiOS 7.6.0 through 7.6.5, FortiOS 7.4.0 through 7.4.10, FortiOS 7.2.0 through 7.2.12, FortiOS 7.0.0 through 7.0.18, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7…

Scores

9.8
CVSS 9.8 out of 10, critical severity.
85.8%
EPSS 85.8% chance of exploitation in the next 30 days.

The facts

Published
27 January 2026
Last changed
17 June 2026
NVD status
Analyzed
Severity
Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
Affects
  • fortinet fortianalyzer
  • fortinet fortimanager
  • fortinet fortinac-f
  • fortinet fortiproxy
  • fortinet fortiweb
Known exploited
Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 27 January 2026.
EPSS
85.8% chance of exploitation activity in the next 30 days (percentile 100).

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References