Zero-day vulnerability in FortiOS

Heap-based buffer overflow

Vulnerability details

Advisory: SB2022121216 - Remote code execution in FortiOS sslvpnd

Vulnerable component: FortiOS

CVE-ID: CVE-2022-42475

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-122 - Heap-based Buffer Overflow


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the sslvpnd daemon. A remote non-authenticated attacker can pass specially crafted data to the SSL-VPN interface, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability is being actively exploited in the wild.

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