Critical FortiClient Flaw Lets Hackers Execute Code When Users Visit Malicious Websites
Fortinet has disclosed a critical origin validation error in FortiClient that allows unauthenticated remote code execution (RCE) on an endpoint when a user visits an attacker-controlled web page. Tracked as CVE-2026-121529 and nicknamed “Fortinet2Shell,” the defect was published on November 10, 2026. It carries a CVSS score of 9.6 and maps to CWE-346 (Origin Validation […] The post Critical FortiClient Flaw Lets Hackers Execute Code When Users Visit Malicious Websites appeared first on Cyber Security News .
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