CVE-2022-41334: 
FortiOS vulnerability analysis and mitigation

An improper neutralization of input during web page generation [CWE-79] vulnerability was discovered in FortiOS versions 7.0.0 to 7.0.7 and 7.2.0 to 7.2.3. The vulnerability allows a remote, unauthenticated attacker to launch a cross-site scripting (XSS) attack via the "redir" parameter of the URL when the "Sign in with FortiCloud" button is clicked (Fortiguard PSIRT, CISA Advisory).

The vulnerability is classified as High severity with a CVSS v3.1 base score of 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The issue stems from improper neutralization of input during web page generation, specifically in the FortiCloud sign-in functionality. The vulnerability is tracked as CVE-2022-41334 and affects the GUI component of the system (CISA Advisory).

If successfully exploited, this vulnerability could allow an attacker to execute unauthorized code or commands through cross-site scripting attacks. The high CVSS score indicates potential for significant impact on the confidentiality, integrity, and availability of the affected systems (CISA Advisory).

Organizations should update to versions newer than FortiOS 7.0.7 or 7.2.3 to address this vulnerability. The issue has been fixed in subsequent releases (CISA Advisory).