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Vulnerabilities of Fortinet FortiOS

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CVE Summary Score Published
CVE-2026-106174 A improper locking vulnerability in Fortinet FortiOS 8.0.0, FortiOS 7.6.4 through 7.6.6 may allow an unauthenticated… 6.7 Medium Oct 27, 2026
CVE-2026-106175 A Double Free vulnerability [CWE-415] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.8, FortiOS 7.4 all versions,… 2.1 Low Oct 13, 2026
CVE-2026-84392 A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiOS 7.4 all versions, FortiOS 7.2 all… 2.5 Low Sep 8, 2026
CVE-2026-84393 A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6,… 7.3 High Sep 8, 2026
CVE-2026-70466 A incomplete list of disallowed inputs vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through… 4.8 Medium Aug 12, 2026
CVE-2026-71407 A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an… 5.1 Medium Aug 12, 2026
CVE-2026-71408 A allocation of resources without limits or throttling vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS… 5.0 Medium Aug 12, 2026
CVE-2025-43892 A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all… 4.1 Medium Jul 14, 2026
CVE-2026-59840 A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all… 4.1 Medium Jul 14, 2026
CVE-2026-23573 An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79]… 6.1 Medium Jul 14, 2026
CVE-2025-62826 An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113]… 3.1 Low Jul 14, 2026
CVE-2026-59839 A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiOS 7.6.0… 5.0 Medium Jul 14, 2026
CVE-2025-62675 An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability [CWE-113]… 3.4 Low Jul 14, 2026
CVE-2026-59837 A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiOS… 5.9 Medium Jul 14, 2026
CVE-2025-67862 An Internal Asset Exposed to Unsafe Debug Access Level or State vulnerability [CWE-1244] vulnerability in Fortinet… 6.0 Medium Jun 9, 2026
CVE-2025-53844 A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS… 8.3 High May 12, 2026
CVE-2025-61624 Exploited Fortinet Multiple Products Path Traversal Vulnerability 5.4 Medium Apr 14, 2026
CVE-2025-53847 A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0… 6.2 Medium Apr 14, 2026
CVE-2025-68686 Exploited Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability 5.3 Medium Feb 10, 2026
CVE-2025-55018 An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0,… 5.2 Medium Feb 10, 2026
CVE-2025-62439 An Improper Verification of Source of a Communication Channel vulnerability [CWE-940] vulnerability in Fortinet… 3.8 Low Feb 10, 2026
CVE-2026-22153 An Authentication Bypass by Primary Weakness vulnerability [CWE-305] vulnerability in Fortinet FortiOS 7.6.0 through… 7.5 High Feb 10, 2026
CVE-2025-64157 A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0… 6.7 Medium Feb 10, 2026
CVE-2026-25815 Fortinet FortiOS through 7.6.6 allows attackers to decrypt LDAP credentials stored in device configuration files, as… 3.2 Low Feb 5, 2026
CVE-2026-24858 Exploited Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability 9.4 Critical Jan 27, 2026

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