Remote code execution in FortiOS sslvpnd

Published: 2022-12-12
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-42475
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Operating systems & Components / Operating system

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one critical risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU70120

Risk: Critical


CVE-ID: CVE-2022-42475

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

Exploit availability: No


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.


Install updates from vendor's website.

It is also advised by the vendor to check your system for the following indicators of compromise:

Multiple log entries with:

Logdesc="Application crashed" and msg="[...] application:sslvpnd,[...], Signal 11 received, Backtrace: [...]“


Presence of the following artifacts in the filesystem:



Connections to suspicious IP addresses from the FortiGate:,30081,30443,20443,444

Vulnerable software versions

FortiOS: 7.2.0 - 7.2.2, 7.0.0 - 7.0.8, 6.4.0 - 6.4.10, 6.2.0 - 6.2.11

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?