Fortinet
FortiOS
Operating system for Fortinet FortiGate firewalls and related security appliances.
7.6.6
- Release date
- March 10, 2026
- CVE status
- 3 visible CVEs
Source
Vendor Release Information
Public release notes are linked for the latest stored release.
Release history
See the latest published releases stored for this product.
| Version | Published | Notes |
|---|---|---|
| 7.6.6 | 2026-03-10 | Release Notes |
Vulnerability tracking
Review curated CVEs for this product and see whether the current version is marked affected. Only CVEs with a CVSS score of 7.0 or higher and published in the last 90 days are shown.
| CVE | Severity | Published | Status | Summary |
|---|---|---|---|---|
| CVE-2026-22153 | HIGH (8.1) | 2026-02-10 | Current versionnot affected | An Authentication Bypass by Primary Weakness vulnerability [CWE-305] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4 may allow an unauthenticated attacker to bypass LDAP authentication of Agentless VPN or FSSO policy, when the remote LDAP server is configured in a specific way. Affected versions
|
| CVE-2025-64157 | HIGH (7.2) | 2026-02-10 | Current versionnot affected | A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0 all versions allows an authenticated admin to execute unauthorized code or commands via specifically crafted configuration. Affected versions
|
| CVE-2026-24858 | CRITICAL (9.8) | 2026-01-27 | Current versionnot affected | 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, 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. Affected versions
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