#VU47690 Improper control of interaction frequency

Published: 2020-10-12 | Updated: 2020-10-16

Vulnerability identifier: #VU47690

Vulnerability risk: Medium

CVSSv3: 4.6 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5141


Exploitation vector: Network

Exploit availability: No

Vulnerable software: SonicOS
Operating systems & Components / Operating system

Vendor: SonicWall


The vulnerability allows a remote attacker to perform a brute-force attack.

The vulnerability exists due to usage of predictable Virtual Assist ticket identifiers and lack of anti-automation protection. A remote non-authenticated attacker can brute-force the Virtual Assist ticket ID in the firewall SSLVPN service.

Install updates from vendor's website.

Vulnerable software versions

SonicOS: 5.9, 6.0, 6.5, 7.0


External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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