Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability

Fortinet FortiOS contains an exposure of sensitive information to an unauthorized actor vulnerability. This may allow a remote unauthenticated attacker to bypass the patch developed for the symbolic link persistency mechanism observed in some post-exploit cases, via crafted HTTP requests. An...

Fortinet FortiSIEM 6.4.x < 7.2.7 / 7.3.x < 7.3.5 / 7.4.x < 7.4.1 XSS (FG-IR-26-149)

The version of Fortinet FortiSIEM running on the remote host is 6.4.x through 7.2.x prior to 7.2.7, 7.3.x prior to 7.3.5, or 7.4.0. It is, therefore, affected by a cross-site scripting vulnerability: - An improper neutralization of script-related HTML tags in a web page basic XSS vulnerability in...

Fortinet FortiSandbox OS Command Injection Vulnerability

Fortinet FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS contain an OS command injection vulnerability that allows an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests...

CVE-2026-59838

CVE-2026-59838 is an XSS-type vulnerability described as improper neutralization of script-related HTML tags in Fortinet FortiSIEM. Affected versions span FortiSIEM 7.4.0; 7.3.0–7.3.4; 7.2.0–7.2.6; 7.1.x; 7.0.x; and all 6.x versions (6.4–6.7). The issue could allow an attacker to execute unauthor...

Vulnerabilities exist in several Fortinet products

Fortinet has identified vulnerabilities in several versions of FortiSIEM Windows Agent and general product versions, FortiOS, FortiPAM, and FortiProxy. One vulnerability exists in the FortiSIEM Windows Agent versions 7.4.0 through 7.4.1 with the identifier CVE-2026-59841. This vulnerability allow...

CVE-2026-23573

An Improper Neutralization of Input During Web Page Generation 'Cross-site Scripting' vulnerability CWE-79 vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiPAM 1.8.0, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5...

CVE-2025-62675

An Improper Neutralization of CRLF Sequences in HTTP Headers 'HTTP Response Splitting' vulnerability CWE-113 vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all...

CVE-2025-62826

An Improper Neutralization of CRLF Sequences in HTTP Headers 'HTTP Response Splitting' vulnerability CWE-113 vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all...

CVE-2025-53379

A out-of-bounds read vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.2, FortiAuthenticator 6.5 all versions may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request...

CVE-2026-59840

Fortinet FortiOS (7.6.0–7.6.2, 7.4.0–7.4.8, 7.2 all) and FortiProxy (7.6.0–7.6.5, 7.4.0–7.4.13, 7.2 all) are affected by a buffer over-read that may lead to information disclosure. Root cause described as a buffer over-read affecting multiple Fortinet products; the exact attack vector is not spec...

CVE-2025-43892

Fortinet FortiOS is affected by CVE-2025-43892: a buffer over-read in FortiOS 7.6.0–7.6.2, 7.4.0–7.4.8, and 7.2 all versions. An authenticated remote attacker could cause the device to return a portion of memory in the redirect response by submitting a specially crafted request. The CVSSv3.1 vect...

CVE-2026-59840

A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.5, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions, FortiProxy 7.0 all...

CVE-2026-23573

An Improper Neutralization of Input During Web Page Generation 'Cross-site Scripting' vulnerability CWE-79 vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiPAM 1.8.0, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5...

CVE-2025-62675

An Improper Neutralization of CRLF Sequences in HTTP Headers 'HTTP Response Splitting' vulnerability CWE-113 vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4 all versions, FortiOS 7.2 all versions, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4 all versions, FortiProxy 7.2 all...

CVE-2026-59836

Fortinet FortiClientEMS suffers an improper certificate validation vulnerability affecting FortiClientEMS 7.4.3–7.4.5, 7.4.0–7.4.1, and FortiClientEMS 7.2 (all versions in that line). Root cause is improper certificate validation; impact is information disclosure with high confidentiality and int...

CVE-2026-59835

Technical details about CVE-2026-59835 are not publicly available in the provided documents. Monitor for updates from Fortinet/NVD/CVE listings for affected products, vulnerable components, and fixes.

PT-2026-58054

Name of the Vulnerable Software and Affected Versions FortiAuthenticator versions 6.6.0 through 6.6.2 FortiAuthenticator versions 6.5.x Description An out-of-bounds read issue allows a remote unauthenticated attacker to retrieve sensitive information by sending a specially crafted request. An...

PT-2026-58075

Name of the Vulnerable Software and Affected Versions FortiOS versions 7.4.0 through 7.4.1 FortiOS versions 7.2.x FortiPAM versions 1.0 through 1.8.2 FortiProxy versions 7.4.0 through 7.4.13 FortiProxy versions 7.2.x Description A stack-based buffer overflow occurs when a privileged authenticated...

Fortinet Fortigate Path traversal in CLI command allows deletion of root file system (FG-IR-26-151)

The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-26-151 advisory. - A improper limitation of a pathname to a restricted directory 'path traversal' vulnerability in Fortinet FortiOS 7.6.0...

Fortinet Fortigate Header injection in captive portal authentication form (FG-IR-26-153)

The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-26-153 advisory. - An Improper Neutralization of CRLF Sequences in HTTP Headers 'HTTP Response Splitting' vulnerability CWE-113 vulnerability ...