Fortinet fixed 16 vulnerabilities, 6 rated as high severity

A improper authentication vulnerability in Fortinet FortiSIEM before 6.5.0 allows a local attacker with CLI access to perform operations on the Glassfish server directly via a hardcoded password.

An improper neutralization of special elements used in an OS command vulnerability [CWE-78] in the command line interpreter of FortiTester 3.0.0 through 3.9.1, 4.0.0 through 4.2.0, 7.0.0 through 7.1.0 may allow an authenticated attacker to execute unauthorized commands via specifically crafted arguments to existing commands.

A improper neutralization of input during web page generation ('cross-site scripting') in Fortinet FortiADC 7.0.0 - 7.0.2 and 6.2.0 - 6.2.4 allows an attacker to execute unauthorized code or commands via the URL and User fields observed in the traffic and event logviews.

Fortinet's FortiOS, FortiProxy, and FortiSwitchManager contain an authentication bypass vulnerability (CWE-288) that lets an unauthenticated remote attacker gain access to the administrative interface. It is triggered by sending specially crafted HTTP or HTTPS requests directly to the admin interface, with no credentials or exploit code required. By bypassing authentication, an attacker can perform administrative operations on the device, such as modifying configuration or creating privileged accounts. Any organization running the affected products is exposed, particularly where the management interface is reachable from the internet. The flaw is being actively exploited: it was added to CISA's Known Exploited Vulnerabilities catalog on 2022-10-11 with known ransomware use, and EPSS assigns it roughly a 100% probability of exploitation within 30 days, although no public PoC is known.

Do: Upgrade FortiOS, FortiProxy, and FortiSwitchManager to the fixed releases identified in Fortinet's advisory per the KEV required action. As mitigation, restrict access to the admin interface (e.g., disable WAN-facing management and use local-in policies or allow-lists for management IPs). Review admin logs and device configuration for signs of unauthorized access, such as unexpected admin accounts, added SSH keys, or config changes.