Vulnerability identifier: #VU56438

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20790

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RevoWorks Browser
Client/Desktop applications / Web browsers

Vendor: J’s Communication Co

Description

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

The vulnerability exists due to improper input validation. A remote attacker can execute arbitrary code on the web browser of the user which is running under the isolated environment.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

RevoWorks Browser: 2.1.197 - 2.1.230

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External links
http://jvn.jp/en/jp/JVN81658818/index.html
http://jscom.jp/news-20210910_2/

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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.