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-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-2026-59836

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-2026-58075

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...

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...

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 ...

FortiBleed Credential Theft Linked to INC and Lynx Ransomware Operations

The recently discovered financially-motivated FortiBleed campaign has been attributed to INC and Lynx ransomware operations, indicating that the verified, stolen credentials were intended for follow-on intrusions. "An operator tied to FortiBleed's infrastructure was found actively working...

⚡ Weekly Recap: Browser Bugs, EDR Killers, TV Botnet, OpenBSD Flaw, Android Trojan, and More

It’s Monday again. This week’s threat list looks painfully familiar: abused integrations, fake tools, poisoned websites, ransomware crews trying to shut down security tools, and mobile malware asking for way too much control. The annoying part is how little of this feels new. Weak credentials,...

Attackers Exploit Three Fortinet FortiSandbox Flaws, One Patched Last Week

Bad actors are exploiting multiple security vulnerabilities in Fortinet FortiSandbox, according to threat intelligence firm Defused Cyber. In a post shared on X, the company said it has observed exploitation of CVE-2026-39813, CVE-2026-39808, and CVE-2026-25089 over the past 24 hours...

Fortinet FortiOS - Credentials Disclosure

Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.3 to 5.6.7 and 5.4.6 to 5.4.12 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to download system files via special crafted HTTP resource requests due to improper limitation of a...

Fortinet FortiNAC - Arbitrary File Write

Fortinet FortiNAC is susceptible to arbitrary file write. An external control of the file name or path can allow an attacker to execute unauthorized code or commands via specifically crafted HTTP request, thus making it possible to obtain sensitive information, modify data, and/or execute...

Fortinet - Authentication Bypass

Fortinet contains an authentication bypass vulnerability via using an alternate path or channel in FortiOS 7.2.0 through 7.2.1 and 7.0.0 through 7.0.6, FortiProxy 7.2.0 and 7.0.0 through 7.0.6, and FortiSwitchManager 7.2.0 and 7.0.0. An attacker can perform operations on the administrative...

Best WAAP Solutions for Enterprise Application Security: How to Choose the Right Platform in 2026

Key Takeaways The major enterprise WAAP solutions evaluated in this guide are Akamai, Cloudflare, F5, Fastly, Fortinet, Imperva, and Radware. In the most recent independent benchmarks, Akamai, Cloudflare, and Imperva were named Leaders in the Forrester Wave: Web Application Firewall Solutions, Q1...

VulnCheck KEV: CVE-2026-39813

A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8 may allow attacker to escalation of privilege via specially crafted HTTP requests...