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CVE-2026-126244

Uncontrolled Resource Allocation Leading to Denial of Service in Fortinet FortiAuthenticator

A allocation of resources without limits or throttling vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to exhaust system resources, potentially resulting in a denial of service (DoS).

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortiauthenticator
CVE-2026-126247

Externally Controlled Format String Vulnerability in FortiAuthenticator Allows Remote Code Execution

A use of externally-controlled format string vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an authenticated privileged attacker to execute unauthorized code or commands via http requests.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortiauthenticator
CVE-2026-126155

Unauthenticated Remote Authorization Bypass in FortiMail Enabling IBE Session Hijacking

A incorrect authorization vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow an unauthenticated remote attacker to obtain an authenticated IBE webmail session as any IBE recipient and read or send their encrypted mail via crafted HTTP requests.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail
CVE-2026-126243

Authentication Bypass Vulnerability in FortiAuthenticator 6.x and 8.x

A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an attacker to bypass authentication and gain unauthorized access. Full impersonation however requires the attacker to obtain pre-required id and data via other means.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortiauthenticator
CVE-2026-126219

Path Traversal in Fortinet FortiAnalyzer and FortiManager Enable Unauthorized File Access

A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiAnalyzer 8.0.0, FortiAnalyzer 7.6.0 through 7.6.7, FortiAnalyzer 7.4.0 through 7.4.11, FortiAnalyzer Cloud 8.0.0, FortiAnalyzer Cloud 7.6.0 through 7.6.7, FortiAnalyzer Cloud 7.4.1 through 7.4.11, FortiManager 8.0.0, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11, FortiManager Cloud 8.0.0, FortiManager Cloud 7.6.0 through 7.6.7, FortiManager Cloud 7.4.1 through 7.4.11 may allow an authenticated administrator to read or write arbitrary files or execute unauthorized code or commands via specially crafted requests to the GUI.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortianalyzer Fortianalyzercloud Fortimanager and 1 more
CVE-2026-126254

Numeric Truncation Error Allowing Malicious iBGP Attribute Injection

A numeric truncation error vulnerability in Fortinet FortiOS 8.0.0 through 8.0.1, FortiOS 7.6.0 through 7.6.7, FortiOS 7.4.0 through 7.4.12, FortiOS 7.2.0 through 7.2.13 may allow a configured ibgp neighbor to send malicious/malformed attributes to all connected routers via a specially crafted request

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortios
CVE-2026-126256

Out‑of‑Bounds Read in FortiOS Enabling Remote Code Execution

A out-of-bounds read vulnerability in Fortinet FortiOS 8.0.0 through 8.0.1, FortiOS 7.6.0 through 7.6.7, FortiOS 7.4.0 through 7.4.12, FortiOS 7.2.0 through 7.2.13 may allow a remote privileged attacker to execute arbitrary code or command via crafted paquets.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortios
CVE-2026-126166

FortiMail Command Injection Allows Remote Execution and Tenant User Deletion

A improper neutralization of argument delimiters in a command ('argument injection') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.2, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow an authenticated remote attacker with domain admin or admin privileges to delete users of other tenant domains on a paired FortiAuthenticator, execute arbitrary code as root or arbitrary CLI commands, and read or write arbitrary files as root via crafted HTTP requests to the administrative interface.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail
CVE-2026-126182

Remote Code Execution via Crafted HTTP Requests in FortiManager and FortiManager Cloud

A improper control of generation of code ('code injection') vulnerability in Fortinet FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11, FortiManager 7.2.0 through 7.2.12, FortiManager Cloud 8.0.0 through 8.0.1, FortiManager Cloud 7.6.0 through 7.6.7, FortiManager Cloud 7.4.1 through 7.4.11, FortiManager Cloud 7.2.1 through 7.2.12 may allow a remote authenticated attacker to execute unauthorized code or commands via crafted HTTP requests.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimanager Fortimanagercloud
CVE-2026-126212

Heap Buffer Overflow in Fortinet FortiAnalyzer/Manager Exposing Privilege Escalation and DoS

A heap-based buffer overflow vulnerability in Fortinet FortiAnalyzer 8.0.0 through 8.0.1, FortiAnalyzer 7.6.0 through 7.6.7, FortiAnalyzer 7.4.0 through 7.4.11, FortiAnalyzer Cloud 8.0.0 through 8.0.1, FortiAnalyzer Cloud 7.6.0 through 7.6.7, FortiAnalyzer Cloud 7.4.1 through 7.4.11, FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11, FortiManager Cloud 8.0.0 through 8.0.1, FortiManager Cloud 7.6.0 through 7.6.7, FortiManager Cloud 7.4.1 through 7.4.11 may allow an authenticated administrator to execute unauthorized code or commands or cause a denial of service via specially crafted JSON-RPC requests.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortianalyzer Fortianalyzercloud Fortimanager and 1 more
CVE-2026-126250

Authorization Bypass Causing Denial of Service in FortiAuthenticator

A incorrect authorization vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to cause a denial of service via HTTP requests.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortiauthenticator
CVE-2026-126253

Unauthenticated Authentication Bypass in Fortinet FortiOS Allowing LSA Broadcast

A authentication bypass by primary weakness vulnerability in Fortinet FortiOS 8.0.0 through 8.0.1, FortiOS 7.6.0 through 7.6.7, FortiOS 7.4.0 through 7.4.12, FortiOS 7.2.0 through 7.2.13 may allow an unauthenticated attacker to broadcast LSA via specially crafted request

CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortios
CVE-2026-126258

Unauthenticated Stack-based Buffer Overflow in FortiOS Proxy and ZTNA Sessions

A stack-based buffer overflow vulnerability in Fortinet FortiOS 8.0.0, FortiOS 7.6.7 may allow an unauthenticated attacker with wad port access to crash proxy or ZTNA sessions via crafted HTTP or HTTPS requests.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortios
CVE-2026-126263

Authenticated SQL Injection in FortiMail Permits Unauthorized Code Execution

A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.4, FortiMail 7.4.0 through 7.4.6 may allow an authenticated attacker to execute unauthorized code or commands via specifically crafted requests.

CVSS 3.1 · 9.4 Critical EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail
CVE-2026-126262

SQL Injection Allowing Remote Code Execution via OFTP on FortiAnalyzer and FortiManager

A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiAnalyzer 8.0.0 through 8.0.1, FortiAnalyzer 7.6.0 through 7.6.7, FortiAnalyzer 7.4.0 through 7.4.11, FortiAnalyzer 7.2.0 through 7.2.12, FortiManager 8.0.0, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11, FortiManager 7.2.0 through 7.2.12 may allow an unauthenticated attacker who has access to the oftp port to execute code or command on the system via crafted OFTP packets.

CVSS 3.1 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortianalyzer Fortimanager
CVE-2026-126150

Weak Password Reset Allows Unauthenticated Account Takeover in Fortinet FortiMail

A weak password recovery mechanism for forgotten password vulnerability in Fortinet FortiMail 8.0.0, FortiMail 7.6.0 through 7.6.5, FortiMail 7.4.0 through 7.4.7, FortiMail 7.2.0 through 7.2.9 may allow an unauthenticated attacker to reset the password of an arbitrary IBE webmail user and take over their account via specially crafted HTTP requests.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail
CVE-2026-126157

Unauthenticated HTTP Requests Allow Unauthorized Access of Secure Email Accounts in FortiMail

A improper authentication vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow an unauthenticated attacker to gain access to other users' secure email accounts via crafted HTTP requests.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail
CVE-2026-126162

XML Injection Vulnerability in FortiMail Allowing Remote Code Execution

A xml injection (aka blind xpath injection) vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6 may allow a remote unauthenticated attacker to execute unauthorized code or commands via a specially crafted request.

CVSS 3.1 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail
CVE-2026-126161

Uncontrolled Resource Consumption in FortiMail Leading to Denial of Service

A uncontrolled resource consumption vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.6 may allow a remote unauthenticated attacker to cause a denial of service via repeated unauthenticated POST requests.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail
CVE-2026-126163

Externally‑Controlled Format String Exploit in FortiMail Permitting Remote Code Execution via SMTP

A use of externally-controlled format string vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1 may allow a remote unauthenticated attacker to execute unauthorized code or commands via a specially crafted SMTP command.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Fortinet
Products
Fortimail