Skip to content
OpenAdvisories
Critical · 9.1 Public exploit CVE-2026-121529 EUVD-2026-122823GHSA-qgwm-rpp4-xv5g

A origin validation error vulnerability in Fortinet FortiClientMac 7.4.0 through 7.4.7, FortiClientWindows 7.4.0 through 7.4.7, FortiClient…

Published Nov 10, 2026 · Updated Nov 13, 2026 · Assigned by fortinet

Vendor: Fortinet Product: FortiClientMac Product: FortiClientWindows Product: FortiClientWindowsPAM Category: Network devices

Description

A origin validation error vulnerability in Fortinet FortiClientMac 7.4.0 through 7.4.7, FortiClientWindows 7.4.0 through 7.4.7, FortiClientWindows 7.2.0 through 7.2.14, FortiClientWindowsPAM 7.4.7, FortiClientWindowsPAM 7.2.14 may allow an unauthorized remote attacker to execute unauthorized code or commands. Successful exploitation requires interaction with the victim.

Affected products

VendorProductAffectedFixed
Fortinet FortiClientMac 7.4.0 – ≤ 7.4.7 —
Fortinet FortiClientWindows 7.4.0 – ≤ 7.4.7, 7.2.0 – ≤ 7.2.14 —
Fortinet FortiClientWindowsPAM 7.4.7, 7.2.14 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 5 repositories

  • tc4dy/CVE-2026-121529-Toolkit ★ 3 · Nov 13, 2026

    CVE-2026-121529 - FortiClient Local API Origin Validation Error (CVSS 9.6). Red/Blue Team suite with 2 tools: Full Exploit (RCE via CORS, browser payload server, interactive shell, mass scan, enum, c…

  • ashrafzaryouh/CVE-2026-121529 ★ 1 · Nov 11, 2026

    CVE-2026-121529

  • googlesky/Fortinet2Shell ★ 0 · Nov 11, 2026

    Fortinet2Shell — containerised PoC for CVE-2026-121529 (FG-IR-26-194): a FortiClient local API origin validation error (CWE-346) that lets a malicious web page drive the victim's own browser into cod…

  • googlesky/CVE-2026-121529 ★ 0 · Nov 11, 2026

    Containerised PoC for CVE-2026-121529 (FG-IR-26-194): a FortiClient local API origin validation error (CWE-346) that lets a malicious web page drive the victim's own browser into code execution as th…

  • Ghost-Bx1/cve-2026-121529-forticlient-cors-rce ★ 0 · Nov 11, 2026

    CVE-2026-121529 - FortiClient CORS RCE (CVSS 9.1)

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References