VendorsFortinetfortiosany version
Vulnerabilities

Fortinet FortiOS any version

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

251CVEs
CVE-2023-40721
A use of externally-controlled format string vulnerability [CWE-134] vulnerability in Fortinet allows a privileged attacker to execute arbitrary code or commands via specially crafted requests.
Published 2025-02-11 · Modified
6.7EPSS 0.002
CVE-2025-24477
A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.7, FortiOS 7.2.4 through 7.2.12 allows an attacker to escalate its privileges via a specially crafted CLI command
Published 2025-07-15 · Modified
6.7EPSS 0.002
CVE-2021-44170
A stack-based buffer overflow vulnerability [CWE-121] in the command line interpreter of FortiOS before 7.0.4 and FortiProxy before 2.0.8 may allow an authenticated attacker to execute unauthorized code or commands via specially crafted command line arguments.
Published 2022-07-18 · Modified
6.7EPSS 0.002
CVE-2021-43072
A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiAnalyzer version 7.0.2 and below, version 6.4.7 and below, version 6.2.9 and below, version 6.0.11 and below, version 5.6.11 and below, FortiManager version 7.0.2 and below, version 6.4.7 and below, version 6.2.9 and below, version 6.0.11 and below, version 5.6.11 and below, FortiOS version 7.0.0 through 7.0.4, 6.4.0 through 6.4.8, 6.2.0 through 6.2.10, 6.0.x and FortiProxy version 7.0.0 through 7.0.3, 2.0.0 through 2.0.8, 1.2.x, 1.1.x and 1.0.x allows attacker to execute unauthorized code or commands via crafted CLI `execute restore image` and `execute certificate remote` operations with the tFTP protocol.
Published 2023-07-18 · Modified
6.7EPSS 0.002
CVE-2023-28002
An improper validation of integrity check value vulnerability [CWE-354] in FortiOS 7.2.0 through 7.2.3, 7.0.0 through 7.0.12, 6.4 all versions, 6.2 all versions, 6.0 all versions and VMs may allow a local attacker with admin privileges to boot a malicious image on the device and bypass the filesystem integrity check in place.
Published 2023-11-14 · Modified
6.7EPSS 0.002
CVE-2025-67862
An Internal Asset Exposed to Unsafe Debug Access Level or State vulnerability [CWE-1244] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.7, FortiOS 7.2.0 through 7.2.10, FortiOS 7.0.0 through 7.0.16, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.10, FortiProxy 7.2.0 through 7.2.14, FortiProxy 7.0 all versions may allow an authenticated admin to execute lua scripts via crafted CLI commands.
Published 2026-06-09 · Modified
6.7EPSS 0.001
CVE-2026-59837
A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiPAM 1.8.0 through 1.8.2, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests.
Published 2026-07-14 · Modified
6.6EPSS 0.007
CVE-2024-47570
An insertion of sensitive information into log file vulnerability [CWE-532] in FortiOS 7.4.0 through 7.4.3, 7.2.0 through 7.2.7, 7.0 all versions; FortiProxy 7.4.0 through 7.4.3, 7.2.0 through 7.2.11; FortiPAM 1.4 all versions, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions and FortiSRA 1.4 all versions may allow a read-only administrator to retrieve API tokens of other administrators via observing REST API logs, if REST API logging is enabled (non-default configuration).
Published 2025-12-09 · Analyzed
6.6EPSS 0.004
CVE-2021-36169
A Hidden Functionality in Fortinet FortiOS 7.x before 7.0.1, FortiOS 6.4.x before 6.4.7 allows attacker to Execute unauthorized code or commands via specific hex read/write operations.
Published 2021-12-13 · Modified
6.6EPSS 0.003
CVE-2018-13383
A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages.
Published 2019-05-29 · Analyzed
6.5KEVEPSS 0.336
CVE-2019-5591
A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server.
Published 2020-08-14 · Analyzed
6.5KEVEPSS 0.184
CVE-2019-6693
Use of a hard-coded cryptographic key to cipher sensitive data in FortiOS configuration backup file may allow an attacker with access to the backup file to decipher the sensitive data, via knowledge of the hard-coded key. The aforementioned sensitive data includes users' passwords (except the administrator's password), private keys' passphrases and High Availability password (when set).
Published 2019-11-21 · Analyzed
6.5KEVEPSS 0.058
CVE-2023-29179
A null pointer dereference in Fortinet FortiOS version 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.12, Fortiproxy version 7.2.0 through 7.2.4, 7.0.0 through 7.0.10 allows attacker to denial of service via specially crafted HTTP requests.
Published 2024-02-22 · Analyzed
6.5EPSS 0.025
CVE-2019-17656
A Stack-based Buffer Overflow vulnerability in the HTTPD daemon of FortiOS 6.0.10 and below, 6.2.2 and below and FortiProxy 1.0.x, 1.1.x, 1.2.9 and below, 2.0.0 and below may allow an authenticated remote attacker to crash the service by sending a malformed PUT request to the server. Fortinet is not aware of any successful exploitation of this vulnerability that would lead to code execution.
Published 2021-04-12 · Modified
6.5EPSS 0.016
CVE-2023-36641
A numeric truncation error in Fortinet FortiProxy version 7.2.0 through 7.2.4, FortiProxy version 7.0.0 through 7.0.10, FortiProxy 2.0 all versions, FortiProxy 1.2 all versions, FortiProxy 1.1, all versions, FortiProxy 1.0 all versions, FortiOS version 7.4.0, FortiOS version 7.2.0 through 7.2.5, FortiOS version 7.0.0 through 7.0.12, FortiOS 6.4 all versions, FortiOS 6.2 all versions, FortiOS 6.0 all versions allows attacker to denial of service via specifically crafted HTTP requests.
Published 2023-11-14 · Modified
6.5EPSS 0.013
CVE-2013-4604
Fortinet FortiOS before 5.0.3 on FortiGate devices does not properly restrict Guest capabilities, which allows remote authenticated users to read, modify, or delete the records of arbitrary users by leveraging the Guest role.
Published 2013-06-25 · Modified
6.5EPSS 0.011
CVE-2023-42786
A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.
Published 2025-01-14 · Analyzed
6.5EPSS 0.009
CVE-2023-33306
A null pointer dereference in Fortinet FortiOS before 7.2.5, before 7.0.11 and before 6.4.13, FortiProxy before 7.2.4 and before 7.0.10 allows attacker to denial of sslvpn service via specifically crafted request in bookmark parameter.
Published 2023-06-16 · Modified
6.5EPSS 0.008
CVE-2023-33305
A loop with unreachable exit condition ('infinite loop') in Fortinet FortiOS version 7.2.0 through 7.2.4, FortiOS version 7.0.0 through 7.0.10, FortiOS 6.4 all versions, FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy version 7.2.0 through 7.2.3, FortiProxy version 7.0.0 through 7.0.9, FortiProxy 2.0 all versions, FortiProxy 1.2 all versions, FortiProxy 1.1 all versions, FortiProxy 1.0 all versions, FortiWeb version 7.2.0 through 7.2.1, FortiWeb version 7.0.0 through 7.0.6, FortiWeb 6.4 all versions, FortiWeb 6.3 all versions allows attacker to perform a denial of service via specially crafted HTTP requests.
Published 2023-06-13 · Modified
6.5EPSS 0.008
CVE-2022-45861
An access of uninitialized pointer vulnerability [CWE-824] in the SSL VPN portal of Fortinet FortiOS version 7.2.0 through 7.2.3, version 7.0.0 through 7.0.9 and before 6.4.11 and FortiProxy version 7.2.0 through 7.2.1, version 7.0.0 through 7.0.7 and before 2.0.11 allows a remote authenticated attacker to crash the sslvpn daemon via an HTTP GET request.
Published 2023-03-07 · Modified
6.5EPSS 0.008
CVE-2024-54021
An Improper Neutralization of CRLF Sequences in HTTP Headers ('http response splitting') vulnerability [CWE-113] in Fortinet FortiOS 7.2.0 through 7.6.0, FortiProxy 7.2.0 through 7.4.5 may allow a remote unauthenticated attacker to bypass the file filter via crafted HTTP headers.
Published 2025-01-14 · Analyzed
6.5EPSS 0.008
CVE-2024-36504
An out-of-bounds read vulnerability [CWE-125] in FortiOS SSLVPN web portal versions 7.4.0 through 7.4.4, versions 7.2.0 through 7.2.8, 7.0 all verisons, and 6.4 all versions may allow an authenticated attacker to perform a denial of service on the SSLVPN web portal via a specially crafted URL.
Published 2025-01-14 · Analyzed
6.5EPSS 0.007
CVE-2023-42785
A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.
Published 2025-01-14 · Analyzed
6.5EPSS 0.007
CVE-2022-42474
A relative path traversal vulnerability [CWE-23] in Fortinet FortiOS version 7.2.0 through 7.2.3, version 7.0.0 through 7.0.9 and before 6.4.12, FortiProxy version 7.2.0 through 7.2.1 and 7.0.0 through 7.0.7, FortiSwitchManager version 7.2.0 through 7.2.1 and before 7.0.1 allows an privileged attacker to delete arbitrary directories from the filesystem through crafted HTTP requests.
Published 2023-06-13 · Modified
6.5EPSS 0.006
CVE-2024-46669
An Integer Overflow or Wraparound vulnerability [CWE-190] in version 7.4.4 and below, version 7.2.10 and below; FortiSASE version 23.4.b FortiOS tenant IPsec IKE service may allow an authenticated attacker to crash the IPsec tunnel via crafted requests, resulting in potential denial of service.
Published 2025-01-14 · Analyzed
6.5EPSS 0.006
CVE-2023-33307
A null pointer dereference in Fortinet FortiOS before 7.2.5 and before 7.0.11, FortiProxy before 7.2.3 and before 7.0.9 allows attacker to denial of sslvpn service via specifically crafted request in network parameter.
Published 2023-06-16 · Modified
6.5EPSS 0.006
CVE-2020-6648
A cleartext storage of sensitive information vulnerability in FortiOS command line interface in versions 6.2.4 and earlier and FortiProxy 2.0.0, 1.2.9 and earlier may allow an authenticated attacker to obtain sensitive information such as users passwords by connecting to FortiGate CLI and executing the "diag sys ha checksum show" command.
Published 2020-10-21 · Modified
6.5EPSS 0.006
CVE-2021-41019
An improper validation of certificate with host mismatch [CWE-297] vulnerability in FortiOS versions 6.4.6 and below may allow the connection to a malicious LDAP server via options in GUI, leading to disclosure of sensitive information, such as AD credentials.
Published 2021-11-02 · Modified
6.5EPSS 0.006
CVE-2023-26207
An insertion of sensitive information into log file vulnerability in Fortinet FortiOS 7.2.0 through 7.2.4 and FortiProxy 7.0.0 through 7.0.10. 7.2.0 through 7.2.1 allows an attacker to read certain passwords in plain text.
Published 2023-06-13 · Modified
6.5EPSS 0.005
CVE-2025-61624
An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') [CWE-22] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiPAM 1.7.0, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.11, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions, FortiSwitchManager 7.2.0 through 7.2.7, FortiSwitchManager 7.0.0 through 7.0.6 may allow an authenticated attacker with admin profile and at least read-write permissions to write or delete arbitrary files via specific CLI commands.
Published 2026-04-14 · Modified
6.5EPSS 0.005
CVE-2025-25248
An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions, 2.0 all versions and FortiPAM version 1.5.0, version 1.4.2 and below, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions SSL-VPN RDP and VNC bookmarks may allow an authenticated user to affect the device SSL-VPN availability via crafted requests.
Published 2025-08-12 · Modified
6.5EPSS 0.005
CVE-2019-5587
Lack of root file system integrity checking in Fortinet FortiOS VM application images all versions below 6.0.5 may allow attacker to implant malicious programs into the installing image by reassembling the image through specific methods.
Published 2019-06-04 · Modified
6.5EPSS 0.005
CVE-2025-24471
An Improper Certificate Validation vulnerability [CWE-295] in FortiOS version 7.6.1 and below, version 7.4.7 and below may allow an EAP verified remote user to connect from FortiClient via revoked certificate.
Published 2025-06-10 · Modified
6.5EPSS 0.004
CVE-2023-33301
An improper access control vulnerability in Fortinet FortiOS 7.2.0 - 7.2.4 and 7.4.0 allows an attacker to access a restricted resource from a non trusted host.
Published 2023-10-10 · Modified
6.5EPSS 0.004
CVE-2025-25252
An Insufficient Session Expiration vulnerability [CWE-613] in FortiOS SSL VPN 7.6.0 through 7.6.2, 7.4.0 through 7.4.6, 7.2.0 through 7.2.10, 7.0.0 through 7.0.16, 6.4 all versions may allow a remote attacker (e.g. a former admin whose account was removed and whose session was terminated) in possession of the SAML record of a user session to access or re-open that session via re-use of SAML record.
Published 2025-10-14 · Analyzed
6.5EPSS 0.003
CVE-2021-41032
An improper access control vulnerability [CWE-284] in FortiOS versions 6.4.8 and prior and 7.0.3 and prior may allow an authenticated attacker with a restricted user profile to gather sensitive information and modify the SSL-VPN tunnel status of other VDOMs using specific CLI commands.
Published 2022-05-04 · Modified
6.3EPSS 0.006
CVE-2018-13380
A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4.0 to 5.4.12, 5.2 and below and Fortinet FortiProxy 2.0.0, 1.2.8 and below under SSL VPN web portal allows attacker to execute unauthorized malicious script code via the error or message handling parameters.
Published 2019-06-04 · Modified
6.1EPSS 0.625
CVE-2017-3133
A Cross-Site Scripting vulnerability in Fortinet FortiOS versions 5.6.0 and earlier allows attackers to execute unauthorized code or commands via the Replacement Message HTML for SSL-VPN.
Published 2017-09-12 · Modified
6.11 PoCEPSS 0.107
CVE-2017-3132
A Cross-Site Scripting vulnerability in Fortinet FortiOS versions 5.6.0 and earlier allows attackers to Execute unauthorized code or commands via the action input during the activation of a FortiToken.
Published 2017-09-12 · Modified
6.11 PoCEPSS 0.081
CVE-2012-0941
Multiple cross-site scripting (XSS) vulnerabilities in Fortinet FortiGate UTM WAF appliances with FortiOS 4.3.x before 4.3.6 allow remote attackers to inject arbitrary web script or HTML via vectors involving the (1) Endpoint Monitor, (2) Dialup List, or (3) Log&Report Display modules, or the fields_sorted_opt parameter to (4) user/auth/list or (5) endpointcompliance/app_detect/predefined_sig_list.
Published 2018-02-08 · Modified
6.1EPSS 0.014
← Prev4 / 7Next →