CVE-2026-24858

9.8 CRITICAL

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through...

Published: 2026-01-27 · Last updated: 2026-06-09

Severity and scoring

CVSS: 9.8 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-288

Affected products

Vendor	Product
fortinet	fortianalyzer, fortimanager, fortinac-f
siemens	fortianalyzer, fortimanager, fortinac-f

Description

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 7.4.12, FortiProxy 7.2.0 through 7.2.15, FortiProxy 7.0.0 through 7.0.22, FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may 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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-24858
[Vendor advisory]https://fortiguard.fortinet.com/psirt/FG-IR-26-060
[Other]https://cert-portal.siemens.com/productcert/html/ssa-975644.html
[Other]https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24858
[Vendor advisory]https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios

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