Researchers at Horizon3 cybersecurity firm have released a proof-of-concept exploit for a critical-severity vulnerability, tracked as CVE-2022-39952, in Fortinet’s FortiNAC network access control solution.

Last week, Fortinet has released security updates to address two critical vulnerabilities in FortiNAC and FortiWeb solutions.

The two vulnerabilities, tracked as CVE-2022-39952 and CVE-2021-42756, are respectively an external control of file name or path in Fortinet FortiNAC and a collection of stack-based buffer overflow issues in the proxy daemon of FortiWeb.

The CVE-2022-39952 flaw (CVSS score of 9.8) is an external control of file name or path in the keyUpload scriptlet of FortiNAC. The vulnerability was internally discovered and reported by Gwendal Guégniaud of Fortinet Product Security team.