CVE-2023-29178

A access of uninitialized pointer vulnerability CWE-824 in Fortinet FortiProxy version 7.2.0 through 7.2.3 and before 7.0.9 and FortiOS version 7.2.0 through 7.2.4 and before 7.0.11 allows an authenticated attacker to repetitively crash the httpsd process via crafted HTTP or HTTPS requests...

CVE-2023-45584

A double free vulnerability CWE-415 vulnerability in Fortinet FortiOS 7.4.0, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.1, FortiProxy 7.2.0 through 7.2.7, FortiProxy 7.0.0...

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...

CVE-2022-38380

An improper access control CWE-284 vulnerability in FortiOS version 7.2.0 and versions 7.0.0 through 7.0.7 may allow a remote authenticated read-only user to modify the interface settings via the API...

CVE-2022-23442

An improper access control vulnerability CWE-284 in FortiOS versions 6.2.0 through 6.2.11, 6.4.0 through 6.4.8 and 7.0.0 through 7.0.5 may allow an authenticated attacker with a restricted user profile to gather the checksum information about the other VDOMs via CLI commands...

CVE-2022-23438

An improper neutralization of input during web page generation 'Cross-site Scripting' CWE-79 vulnerability in FortiOS version 7.0.5 and prior and 6.4.9 and prior may allow an unauthenticated remote attacker to perform a reflected cross site scripting XSS attack in the captive portal authenticatio...

CVE-2022-42472

A improper neutralization of crlf sequences in http headers 'http response splitting' in Fortinet FortiOS versions 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.11, 6.2.0 through 6.2.12, 6.0.0 through 6.0.16, FortiProxy 7.2.0 through 7.2.1, 7.0.0 through 7.0.7, 2.0.0 through 2.0.10,...

CVE-2022-26122

An insufficient verification of data authenticity vulnerability CWE-345 in FortiClient, FortiMail and FortiOS AV engines version 6.2.168 and below and version 6.4.274 and below may allow an attacker to bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64...

CVE-2020-12820

Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon fcnacd and potentially execute arbitrary code via requesting a large FortiClien...

CVE-2023-25610

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, versio...

CVE-2023-29183

An improper neutralization of input during web page generation 'Cross-site Scripting' vulnerability CWE-79 in FortiProxy 7.2.0 through 7.2.4, 7.0.0 through 7.0.10 and FortiOS 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.12, 6.2.0 through 6.2.14 GUI may allow an authenticated...

CVE-2023-29181

A use of externally-controlled format string in Fortinet FortiOS 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0 through 6.4.12, 6.2.0 through 6.2.14, 6.0.0 through 6.0.16, FortiProxy 7.2.0 through 7.2.4, 7.0.0 through 7.0.10, 2.0.0 through 2.0.12, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0....

CVE-2023-50176

A session fixation in Fortinet FortiOS version 7.4.0 through 7.4.3 and 7.2.0 through 7.2.7 and 7.0.0 through 7.0.13 allows attacker to execute unauthorized code or commands via phishing SAML authentication link...

CVE-2022-42476

A relative path traversal vulnerability CWE-23 in Fortinet FortiOS version 7.2.0 through 7.2.2, 7.0.0 through 7.0.8 and before 6.4.11, FortiProxy version 7.2.0 through 7.2.2 and 7.0.0 through 7.0.8 allows privileged VDOM administrators to escalate their privileges to super admin of the box via...

CVE-2022-42475

A heap-based buffer overflow vulnerability CWE-122 in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute...

CVE-2022-35843

An authentication bypass by assumed-immutable data vulnerability CWE-302 in the FortiOS SSH login component 7.2.0, 7.0.0 through 7.0.7, 6.4.0 through 6.4.9, 6.2 all versions, 6.0 all versions and FortiProxy SSH login component 7.0.0 through 7.0.5, 2.0.0 through 2.0.10, 1.2.0 all versions may allo...

CVE-2022-27491

A improper verification of source of a communication channel in Fortinet FortiOS with IPS engine version 7.201 through 7.214, 7.001 through 7.113, 6.001 through 6.121, 5.001 through 5.258 and before 4.086 allows a remote and unauthenticated attacker to trigger the sending of "blocked page" HTML...

CVE-2019-16151

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...

PT-2025-54218

Name of the Vulnerable Software and Affected Versions FortiOS affected versions not specified Description A flaw in FortiOS allows bypassing of multi-factor authentication MFA through manipulation of username case. This issue is currently being exploited. The exploitation involves tricking the...

Critical vulnerabilities in Fortinet CVE-2025-59718, CVE-2025-59719, CVE-2026-24858 exploited in the wild

Overview Update for CVE-2026-24858: On January 27, 2026, Fortinet disclosedCVE-2026-24858 , a critical unauthenticated vulnerability allowing authentication bypass via Fortinet’s cloud SSO. Confirmed as a net-new vulnerability rather than a patch bypass, it has beenobserved under active zero-day...