#VU54772 Inadequate encryption strength

Published: 2021-07-13

Vulnerability identifier: #VU54772

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-26095


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fortinet FortiMail
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Fortinet, Inc


The vulnerability allows a remote user to escalate privileges.

The vulnerability exists due to a combination of various cryptographic issues in the session management of FortiMail, including the encryption construction of the session cookie. A remote user with possession of a valid session cookie can decrypt it and reveal or alter its content.

Successful exploitation of the vulnerability may allow an attacker to escalate privileges on the system.

Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiMail: 6.2.0 - 6.4.4


External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability