← Back to Threat Radar·Vendor focus

Fortinet Vulnerabilities Affecting Small Businesses

FortiGate firewall and FortiClient VPN vulnerabilities — a primary target for SMB ransomware attacks.

73
Total CVEs
3
Critical
0
High risk
3
CISA KEV
Last updated: April 21, 2026 · Data: NVD · CISA KEV · EPSS
CVE-2025-64446criticalKEVEXPLOIT

A relative path traversal vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an attacker to execute administrative commands on the system via crafted HTTP or HTTPS requests.

87
SMB SCORE
CVSS 9.8
EPSS 89.0%
CVE-2025-58034criticalKEVEXPLOIT

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability [CWE-78] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an authenticated attacker to execute unauthorized code on the underlying system via crafted HTTP requests or CLI commands.

83
SMB SCORE
CVSS 7.2
EPSS 49.7%
CVE-2025-25257criticalKEVEXPLOIT

An improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability [CWE-89] vulnerability in Fortinet FortiWeb 7.6.0 through 7.6.3, FortiWeb 7.4.0 through 7.4.7, FortiWeb 7.2.0 through 7.2.10, FortiWeb 7.0.0 through 7.0.10 allows an unauthenticated attacker to execute unauthorized SQL code or commands via crafted HTTP or HTTPs requests.

81
SMB SCORE
CVSS 9.8
EPSS 31.0%
CVE-2023-25610medium

A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of Fortinet FortiOS version 7.2.0 through 7.2.3, version 7.0.0 through 7.0.6, version 6.4.0 through 6.4.11 and version 6.2.12 and below, FortiProxy version 7.2.0 through 7.2.2, version 7.0.0 through 7.0.8, version 2.0.12 and below and FortiOS-6K7K version 7.0.5, version 6.4.0 through 6.4.10 and version 6.2.0 through 6.2.10 and below allows a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

45
SMB SCORE
CVSS 9.8
EPSS 16.0%
CVE-2023-33300medium

A improper neutralization of special elements used in a command ('command injection') in Fortinet FortiNAC 7.2.1 and earlier, 9.4.3 and earlier allows attacker a limited, unauthorized file access via specifically crafted request in inter-server communication port.

38
SMB SCORE
CVSS 5.3
EPSS 3.9%
CVE-2024-55590medium

Multiple improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerabilities [CWE-78] in Fortinet FortiIsolator version 2.4.0 through 2.4.5 allows an authenticated attacker with at least read-only admin permission and CLI access to execute unauthorized code via specifically crafted CLI commands.

27
SMB SCORE
CVSS 8.8
EPSS 0.4%
CVE-2023-33302medium

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.

26
SMB SCORE
CVSS 4.7
EPSS 0.4%
CVE-2024-46662medium

A improper neutralization of special elements used in a command ('command injection') in Fortinet FortiManager versions 7.4.1 through 7.4.3, FortiManager Cloud versions 7.4.1 through 7.4.3 allows attacker to escalation of privilege via specifically crafted packets

26
SMB SCORE
CVSS 8.8
EPSS 0.4%
CVE-2024-26006medium

An improper neutralization of input during web page Generation vulnerability [CWE-79] in FortiOS version 7.4.3 and below, version 7.2.7 and below, version 7.0.13 and below and FortiProxy version 7.4.3 and below, version 7.2.9 and below, version 7.0.16 and below web SSL VPN UI may allow a remote unauthenticated attacker to perform a Cross-Site Scripting attack via a malicious samba server.

26
SMB SCORE
CVSS 7.5
EPSS 0.5%
CVE-2020-9295medium

FortiOS 6.2 running AV engine version 6.00142 and below, FortiOS 6.4 running AV engine version 6.00144 and below and FortiClient 6.2 running AV engine version 6.00137 and below may not immediately detect certain types of malformed or non-standard RAR archives, potentially containing malicious files. Based on the samples provided, FortiClient will detect the malicious files upon trying extraction by real-time scanning and FortiGate will detect the malicious archive if Virus Outbreak Prevention is enabled.

26
SMB SCORE
CVSS 4.7
EPSS 0.3%
CVE-2024-55597medium

A improper limitation of a pathname to a restricted directory ('path traversal') in Fortinet FortiWeb versions 7.0.0 through 7.6.0 allows attacker to execute unauthorized code or commands via crafted requests.

25
SMB SCORE
CVSS 5.5
EPSS 0.3%
CVE-2021-24008medium

An exposure of sensitive system information to an unauthorized control sphere vulnerability [CWE-497] in FortiDDoS version 5.4.0, version 5.3.2 and below, version 5.2.0, version 5.1.0, version 5.0.0, version 4.7.0, version 4.6.0, version 4.5.0, version 4.4.2 and below, FortiDDoS-CM version 5.3.0, version 5.2.0, version 5.1.0, version 5.0.0, version 4.7.0, FortiVoice version 6.0.6 and below, FortiRecorder version 6.0.3 and below and FortiMail version 6.4.1 and below, version 6.2.4 and below, version 6.0.9 and below may allow a remote, unauthenticated attacker to obtain potentially sensitive software-version information by reading a JavaScript file.

25
SMB SCORE
CVSS 5.3
EPSS 0.2%
CVE-2024-21760medium

An improper control of generation of code ('Code Injection') vulnerability [CWE-94] in FortiSOAR Connector FortiSOAR 7.4 all versions, 7.3 all versions, 7.2 all versions, 7.0 all versions, 6.4 all versions may allow an authenticated attacker to execute arbitrary code on the host via a playbook code snippet.

24
SMB SCORE
CVSS 8.4
EPSS 0.2%
CVE-2025-52436medium

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an unauthenticated attacker to execute commands via crafted requests.

24
SMB SCORE
CVSS 8.8
EPSS 0.2%
CVE-2021-26091medium

A use of a cryptographically weak pseudo-random number generator vulnerability in the authenticator of the Identity Based Encryption service of FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to infer parts of users authentication tokens and reset their credentials.

24
SMB SCORE
CVSS 7.5
EPSS 0.1%
CVE-2020-29010medium

An exposure of sensitive information to an unauthorized actor vulnerability in FortiOS version 6.2.4 and below, version 6.0.10 and belowmay allow remote authenticated actors to read the SSL VPN events log entries of users in other VDOMs by executing "get vpn ssl monitor" from the CLI. The sensitive data includes usernames, user groups, and IP address.

23
SMB SCORE
CVSS 5.0
EPSS 0.2%
CVE-2024-52961medium

An improper neutralization of special elements used in an OS Command vulnerability [CWE-78] vulnerability in Fortinet FortiSandbox 5.0.0, FortiSandbox 4.4.0 through 4.4.6, FortiSandbox 4.2.1 through 4.2.7, FortiSandbox 4.0.0 through 4.0.5, FortiSandbox 3.2 all versions, FortiSandbox 3.1 all versions, FortiSandbox 3.0 all versions allows an authenticated attacker with at least read-only permission to execute unauthorized commands via crafted requests.

23
SMB SCORE
CVSS 8.8
EPSS 0.2%
CVE-2024-54018medium

Multiple improper neutralization of special elements used in an OS Command vulnerabilities [CWE-78] in FortiSandbox before 4.4.5 allows a privileged attacker to execute unauthorized commands via crafted requests.

23
SMB SCORE
CVSS 7.2
EPSS 0.2%
CVE-2019-16151medium

An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiOS 6.4.1 and below, 6.2.9 and below may allow a remote unauthenticated attacker to either redirect users to malicious websites via a crafted "Host" header or to execute JavaScript code in the victim's browser context. This happens when the FortiGate has web filtering and category override enabled/configured.

23
SMB SCORE
CVSS 4.7
EPSS 0.1%
CVE-2019-6697medium

An Improper Neutralization of Input vulnerability affecting FortiGate version 6.2.0 through 6.2.1, 6.0.0 through 6.0.6 in the hostname parameter of a DHCP packet under DHCP monitor page may allow an unauthenticated attacker in the same network as the FortiGate to perform a Stored Cross Site Scripting attack (XSS) by sending a crafted DHCP packet.

23
SMB SCORE
CVSS 5.3
EPSS 0.1%
CVE-2024-52960medium

A client-side enforcement of server-side security vulnerability [CWE-602] in Fortinet FortiSandbox version 5.0.0, 4.4.0 through 4.4.6 and before 4.2.7 allows an authenticated attacker with at least read-only permission to execute unauthorized commands via crafted requests.

23
SMB SCORE
CVSS 4.3
EPSS 0.1%
CVE-2021-32584medium

An improper access control (CWE-284) vulnerability in FortiWLC version 8.6.0, version 8.5.3 and below, version 8.4.8 and below, version 8.3.3 and below, version 8.2.7 to 8.2.4, version 8.1.3 may allow an unauthenticated and remote attacker to access certain areas of the web management CGI functionality by just specifying the correct URL. The vulnerability applies only to limited CGI resources and might allow the unauthorized party to access configuration details.

23
SMB SCORE
CVSS 5.3
EPSS 0.1%
CVE-2023-47539medium

An improper access control vulnerability in FortiMail version 7.4.0 configured with RADIUS authentication and remote_wildcard enabled may allow a remote unauthenticated attacker to bypass admin login via a crafted HTTP request.

22
SMB SCORE
CVSS 9.8
EPSS 0.1%
CVE-2025-46215medium

An Improper Isolation or Compartmentalization vulnerability [CWE-653] in Fortinet FortiSandbox 5.0.0 through 5.0.1, FortiSandbox 4.4.0 through 4.4.7, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions may allow an unauthenticated attacker to evade the sandboxing scan via a crafted file.

22
SMB SCORE
CVSS 5.3
EPSS 0.1%
CVE-2023-37933medium

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.

22
SMB SCORE
CVSS 8.8
EPSS 0.1%
CVE-2024-45324medium

A use of externally-controlled format string vulnerability [CWE-134] in FortiOS version 7.4.0 through 7.4.4, version 7.2.0 through 7.2.9, version 7.0.0 through 7.0.15 and before 6.4.15, FortiProxy version 7.4.0 through 7.4.6, version 7.2.0 through 7.2.12 and before 7.0.19, FortiPAM version 1.4.0 through 1.4.2 and before 1.3.1, FortiSRA version 1.4.0 through 1.4.2 and before 1.3.1 and FortiWeb version 7.4.0 through 7.4.5, version 7.2.0 through 7.2.10 and before 7.0.10 allows a privileged attacker to execute unauthorized code or commands via specially crafted HTTP or HTTPS commands.

22
SMB SCORE
CVSS 7.2
EPSS 0.1%
CVE-2024-27779medium

An insufficient session expiration vulnerability [CWE-613] in FortiSandbox FortiSandbox version 4.4.4 and below, version 4.2.6 and below, 4.0 all versions, 3.2 all versions and FortiIsolator version 2.4 and below, 2.3 all versions, 2.2 all versions, 2.1 all versions, 2.0 all versions, 1.2 all versions may allow a remote attacker in possession of an admin session cookie to keep using that admin's session even after the admin user was deleted.

22
SMB SCORE
CVSS 6.7
EPSS 0.1%
CVE-2024-40590medium

An improper certificate validation vulnerability [CWE-295] in FortiPortal version 7.4.0, version 7.2.4 and below, version 7.0.8 and below, version 6.0.15 and below when connecting to a FortiManager device, a FortiAnalyzer device, or an SMTP server may allow an unauthenticated attacker in a Man-in-the-Middle position to intercept on and tamper with the encrypted communication channel established between the FortiPortal and those endpoints.

22
SMB SCORE
CVSS 4.8
EPSS 0.2%
CVE-2022-29059medium

An improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability [CWE-89] in FortiWeb version 7.0.1 and below, 6.4.2 and below, 6.3.20 and below, 6.2.7 and below may allow a privileged attacker to execute SQL commands over the log database via specifically crafted strings parameters.

21
SMB SCORE
CVSS 2.7
EPSS 0.1%
CVE-2025-55018medium

An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4.3 through 6.4.16 may allow an unauthenticated attacker to smuggle an unlogged http request through the firewall policies via a specially crafted header

21
SMB SCORE
CVSS 5.8
EPSS 0.1%
CVE-2024-40585medium

An insertion of sensitive information into log file vulnerabilities [CWE-532] in FortiManager version 7.4.0, version 7.2.3 and below, version 7.0.8 and below, version 6.4.12 and below, version 6.2.11 and below and FortiAnalyzer version 7.4.0, version 7.2.3 and below, version 7.0.8 and below, version 6.4.12 and below, version 6.2.11 and below eventlog may allow any low privileged user with access to event log section to retrieve certificate private key and encrypted password logged as system log.

21
SMB SCORE
CVSS 6.5
EPSS 0.1%
CVE-2019-17659medium

A use of hard-coded cryptographic key vulnerability in FortiSIEM version 5.2.6 may allow a remote unauthenticated attacker to obtain SSH access to the supervisor as the restricted user "tunneluser" by leveraging knowledge of the private key from another installation or a firmware image.

21
SMB SCORE
CVSS 3.7
EPSS 0.2%
CVE-2025-54972medium

An improper neutralization of crlf sequences ('crlf injection') vulnerability in Fortinet FortiMail 7.6.0 through 7.6.3, FortiMail 7.4.0 through 7.4.5, FortiMail 7.2 all versions, FortiMail 7.0 all versions may allow an attacker to inject headers in the response via convincing a user to click on a specifically crafted link

21
SMB SCORE
CVSS 4.3
EPSS 0.1%
CVE-2021-26105medium

A stack-based buffer overflow vulnerability (CWE-121) in the profile parser of FortiSandbox version 3.2.2 and below, version 3.1.4 and below may allow an authenticated attacker to potentially execute unauthorized code or commands via specifically crafted HTTP requests.

21
SMB SCORE
CVSS 6.8
EPSS 0.2%
CVE-2023-40723medium

An exposure of sensitive information to an unauthorized actor in Fortinet FortiSIEM version 6.7.0 through 6.7.4 and 6.6.0 through 6.6.3 and 6.5.0 through 6.5.1 and 6.4.0 through 6.4.2 and 6.3.0 through 6.3.3 and 6.2.0 through 6.2.1 and 6.1.0 through 6.1.2 and 5.4.0 and 5.3.0 through 5.3.3 and 5.2.5 through 5.2.8 and 5.2.1 through 5.2.2 and 5.1.0 through 5.1.3 allows attacker to execute unauthorized code or commands via api request.

21
SMB SCORE
CVSS 8.1
EPSS 0.1%
CVE-2024-55594medium

An improper handling of syntactically invalid structure in Fortinet FortiWeb at least vesrions 7.4.0 through 7.4.6 and 7.2.0 through 7.2.10 and 7.0.0 through 7.0.10 allows attacker to execute unauthorized code or commands via HTTP/S crafted requests.

21
SMB SCORE
CVSS 5.6
EPSS 0.1%
CVE-2023-42784medium

An improper handling of syntactically invalid structure in Fortinet FortiWeb at least verions 7.4.0 through 7.4.6 and 7.2.0 through 7.2.10 and 7.0.0 through 7.0.10 allows attacker to execute unauthorized code or commands via HTTP/S crafted requests.

21
SMB SCORE
CVSS 5.6
EPSS 0.1%
CVE-2024-47573medium

An improper validation of integrity check value vulnerability [CWE-354] in FortiNDR version 7.4.2 and below, version 7.2.1 and below, version 7.1.1 and below, version 7.0.6 and below may allow an authenticated attacker with at least Read/Write permission on system maintenance to install a corrupted firmware image.

21
SMB SCORE
CVSS 6.5
EPSS 0.1%
CVE-2019-15706medium

An improper neutralization of input during web page generation in the SSL VPN portal of FortiProxy version 2.0.0, version 1.2.9 and below and FortiOS version 6.2.1 and below, version 6.0.8 and below, version 5.6.12 may allow a remote authenticated attacker to perform a stored cross site scripting attack (XSS).

21
SMB SCORE
CVSS 4.1
EPSS 0.1%
CVE-2024-54026medium

An improper neutralization of special elements used in an sql command ('sql injection') in Fortinet FortiSandbox 4.4.0 through 4.4.6, FortiSandbox 4.2 all versions, FortiSandbox 4.0 all versions, FortiSandbox 3.2 all versions, FortiSandbox 3.1 all versions, FortiSandbox 3.0 all versions, FortiSandbox Cloud 24.1 allows attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

20
SMB SCORE
CVSS 4.3
EPSS 0.1%
CVE-2021-26087medium

An improper neutralization of input during web page generation in FortiWLC version 8.6.0, version 8.5.3 and below, version 8.4.8 and below, version 8.3.3 web interface may allow both authenticated remote attackers and non-authenticated attackers in the same network as the appliance to perform a stored cross site scripting attack (XSS) via injecting malicious payloads in different locations.

20
SMB SCORE
CVSS 4.3
EPSS 0.1%
CVE-2025-54971medium

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

20
SMB SCORE
CVSS 4.3
EPSS 0.1%
CVE-2023-48785medium

An improper certificate validation vulnerability [CWE-295] in FortiNAC-F version 7.2.4 and below may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the HTTPS communication channel between the FortiOS device, an inventory, and FortiNAC-F.

20
SMB SCORE
CVSS 4.8
EPSS 0.1%
CVE-2025-58692low

An improper neutralization of special elements used in an SQL Command ("SQL Injection") vulnerability [CWE-89] vulnerability in Fortinet FortiVoice 7.2.0 through 7.2.2, FortiVoice 7.0.0 through 7.0.7 allows an authenticated attacker to execute unauthorized code or commands via specifically crafted HTTP or HTTPS requests.

20
SMB SCORE
CVSS 8.8
EPSS 0.0%
CVE-2024-55592low

An incorrect authorization vulnerability [CWE-863] in FortiSIEM 7.2 all versions, 7.1 all versions, 7.0 all versions, 6.7 all versions, 6.6 all versions, 6.5 all versions, 6.4 all versions, 6.3 all versions, 6.2 all versions, 6.1 all versions, 5.4 all versions, 5.3 all versions, may allow an authenticated attacker to perform unauthorized operations on incidents via crafted HTTP requests.

20
SMB SCORE
CVSS 3.8
EPSS 0.0%
CVE-2024-32124low

An improper access control vulnerability [CWE-284] in FortiIsolator version 2.4.4, version 2.4.3, 2.3 all versions logging component may allow a remote authenticated read-only attacker to alter logs via a crafted HTTP request.

20
SMB SCORE
CVSS 4.3
EPSS 0.0%
CVE-2026-21743low

A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint.

19
SMB SCORE
CVSS 7.2
EPSS 0.0%
CVE-2025-48839low

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.

19
SMB SCORE
CVSS 6.6
EPSS 0.1%
CVE-2019-16149low

An Improper Neutralization of Input During Web Page Generation in FortiClientEMS version 6.2.0 may allow a remote attacker to execute unauthorized code by injecting malicious payload in the user profile of a FortiClient instance being managed by the vulnerable system.

19
SMB SCORE
CVSS 5.5
EPSS 0.1%
CVE-2025-58412low

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.

18
SMB SCORE
CVSS 4.7
EPSS 0.0%
Related — other vendors affecting SMB
Microsoft vulnerabilities →Cisco vulnerabilities →SonicWall vulnerabilities →Apache vulnerabilities →WordPress vulnerabilities →Veeam vulnerabilities →Synology vulnerabilities →QNAP vulnerabilities →