A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.

A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiADC 7.6.0 through 7.6.1, FortiADC 7.4.0 through 7.4.6, FortiADC 7.2.0 through 7.2.7, FortiADC 7.1.0 through 7.1.4, FortiADC 7.0 all versions, FortiADC 6.2 all versions, FortiADC 6.1 all versions, FortiADC 6.0 all versions, FortiADC 5.4 all versions, FortiADC 5.3 all versions, FortiADC 5.2 all versions, FortiADC 5.1 all versions, FortiADC 5.0 all versions, FortiADC 4.8 all versions, FortiADC 4.7 all versions, FortiADC 4.6 all versions, FortiADC 4.5 all versions, FortiADC 4.4 all versions, FortiADC 4.3 all versions, FortiADC 4.2 all versions, FortiADC 4.1 all versions, FortiADC 4.0 all versions, FortiADC 3.2 all versions, FortiADC 3.1 all versions, FortiADC 3.0 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>

A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC 6.1.0, 6.0.0 to 6.0.1, 5.4.0 to 5.4.4 allows attacker to obtain the LDAP server login credentials configured in FortiGate via pointing a LDAP server connectivity test request to a rogue LDAP server instead of the configured one.

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.

An improper authorization vulnerability in FortiADC may allow a remote authenticated user with low privileges to perform certain actions such as rebooting the system.

A fundamental design flaw within the RADIUS protocol has been proven to be exploitable, compromising the integrity in the RADIUS Access-Request process. The attack allows a malicious user to modify packets in a way that would be indistinguishable to a RADIUS client or server. To be successful, the attacker must have the ability to inject themselves between the client and server.

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiADC GUI version 7.4.0, 7.2.0 through 7.2.1 and before 7.1.3 allows an authenticated attacker to perform an XSS attack via crafted HTTP or HTTPs requests.

An improper neutralization of special elements used in an OS Command ("OS Command Injection") vulnerability [CWE-78] in Fortinet FortiADC version 7.2.0 and before 7.1.1 allows a remote and authenticated attacker with low privilege to execute unauthorized code via specifically crafted HTTP parameters.

An Out-of-bounds Write vulnerability [CWE-787] in FortiADC 8.0.0, 7.6.0 through 7.6.2, 7.4.0 through 7.4.7, 7.2 all versions, 7.1 all versions, 7.0 all versions, 6.2 all versions may allow an authenticated attacker to execute arbitrary code via specially crafted HTTP requests.

A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiADC 8.0.0, FortiADC 7.6.0 through 7.6.3, FortiADC 7.4 all versions, FortiADC 7.2 all versions may allow attacker to execute unauthorized code or commands via crafted URL.

Multiple improper neutralization of special elements used in an os command ('OS Command Injection') vulnerabilties [CWE-78] in Fortinet FortiADCManager version 7.1.0 and before 7.0.0, FortiADC version 7.2.0 and before 7.1.2 allows a local authenticated attacker to execute arbitrary shell code as root user via crafted CLI requests.

A externally controlled reference to a resource in another sphere vulnerability in Fortinet allows attacker to poison web caches via crafted HTTP requests, where the Host header points to an arbitrary webserver

An exposure of sensitive information to an unauthorized actor vulnerability in Fortinet FortiADC 7.4.0, FortiADC 7.2 all versions, FortiADC 7.1 all versions, FortiADC 7.0 all versions, FortiADC 6.2 all versions may allow an admin with read-only permission to get the external resources password via the logs of the product

An exposure of sensitive information to an unauthorized actor vulnerability [CWE-200] in Fortinet FortiADC version 7.4.0, version 7.2.3 and below, version 7.1.4 and below, 7.0 all versions, 6.2 all versions may allow an authenticated attacker to obtain sensitive data via crafted HTTP or HTTPs requests.

An improper access control vulnerability [CWE-284] in FortiADC automation feature 7.1.0 through 7.1.2, 7.0 all versions, 6.2 all versions, 6.1 all versions may allow an authenticated low-privileged attacker to escalate their privileges to superadmin via a specific crafted configuration of fabric automation CLI script.

An improper neutralization of special elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78 ] in FortiManager 7.2.0 through 7.2.2, 7.0.0 through 7.0.7, 6.4.0 through 6.4.11, 6.2 all versions, 6.0 all versions, FortiAnalyzer 7.2.0 through 7.2.2, 7.0.0 through 7.0.7, 6.4.0 through 6.4.11, 6.2 all versions, 6.0 all versions and FortiADC  7.1.0, 7.0.0 through 7.0.3, 6.2 all versions, 6.1 all versions, 6.0 all versions management interface may allow an authenticated attacker with at least READ permissions on system settings to execute arbitrary commands on the underlying shell due to an unsafe usage of the wordexp function.

An improper neutralization of special elements used in an OS command vulnerability [CWE-78] in the management interface of FortiADC 7.1.0 through 7.1.1, 7.0.0 through 7.0.3, 6.2.0 through 6.2.5 and 6.1.0 all versions may allow an authenticated attacker to execute unauthorized commands via specifically crafted arguments to existing commands.

A buffer overflow [CWE-121] in the TFTP client library of FortiOS before 6.4.7 and FortiOS 7.0.0 through 7.0.2, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.

CVE-2025-26466A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.

An improper neutralization of input vulnerability in Fortinet FortiADC 5.3.3 and earlier may allow an attacker to execute a stored Cross Site Scripting (XSS) via a field in the traffic group interface.

A clear text storage of sensitive information into log file vulnerability in FortiADCManager 5.3.0 and below, 5.2.1 and below and FortiADC 5.3.7 and below may allow a remote authenticated attacker to read other local users' password in log files.

A cleartext storage of sensitive information in GUI in FortiADC versions 5.4.3 and below, 6.0.0 and below may allow a remote authenticated attacker to retrieve some sensitive information such as users LDAP passwords and RADIUS shared secret by deobfuscating the passwords entry fields.

A missing cryptographic steps vulnerability in the function that encrypts users' LDAP and RADIUS credentials in FortiSandbox before 4.0.1, FortiWeb before 6.3.12, FortiADC before 6.2.1, FortiMail 7.0.1 and earlier may allow an attacker in possession of the password store to compromise the confidentiality of the encrypted secrets.

A format string vulnerability [CWE-134] in the command line interpreter of FortiADC version 6.0.0 through 6.0.4, FortiADC version 6.1.0 through 6.1.5, FortiADC version 6.2.0 through 6.2.1, FortiProxy version 1.0.0 through 1.0.7, FortiProxy version 1.1.0 through 1.1.6, FortiProxy version 1.2.0 through 1.2.13, FortiProxy version 2.0.0 through 2.0.7, FortiProxy version 7.0.0 through 7.0.1, FortiOS version 6.0.0 through 6.0.14, FortiOS version 6.2.0 through 6.2.10, FortiOS version 6.4.0 through 6.4.8, FortiOS version 7.0.0 through 7.0.2, FortiMail version 6.4.0 through 6.4.5, FortiMail version 7.0.0 through 7.0.2 may allow an authenticated user to execute unauthorized code or commands via specially crafted command arguments.

An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiADC management interface 7.1.0 may allow a remote and authenticated attacker to trigger a stored cross site scripting (XSS) attack via configuring a specially crafted IP Address.

A improper neutralization of input during web page generation ('cross-site scripting') in Fortinet FortiADC 7.0.0 - 7.0.2 and 6.2.0 - 6.2.4 allows an attacker to execute unauthorized code or commands via the URL and User fields observed in the traffic and event logviews.

An improper handling of malformed request vulnerability [CWE-228] exists in FortiADC 5.0 all versions, 6.0.0 all versions, 6.1.0 all versions, 6.2.0 through 6.2.3, and 7.0.0 through 7.0.2. This may allow a remote attacker without privileges to bypass some Web Application Firewall (WAF) protection such as the SQL Injection and XSS filters via a malformed HTTP request.

A buffer overflow [CWE-121] in the TFTP client library of FortiOS, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.

A buffer underwrite (CWE-124) vulnerability in the firmware verification routine of FortiWeb, FortiOS, FortiSwitch, FortiADC, FortiAI, FortiManager, FortiAnalyzer, FortiProxy may allow an attacker located in the adjacent network to potentially execute arbitrary code via a specifically crafted firmware image.

A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiADC version 7.0.0 through 7.0.2, FortiADC version 6.2.0 through 6.2.3, FortiADC version version 6.1.0 through 6.1.6, FortiADC version 6.0.0 through 6.0.4, FortiADC version 5.4.0 through 5.4.5 may allow an attacker to execute unauthorized code or commands via specifically crafted HTTP requests.