Vulnerability identifier: #VU58116

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-42727

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RoboHelp Server
Server applications / Other server solutions

Vendor: Adobe

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Successful exploitation of the vulnerability can lead to full system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

RoboHelp Server: 2020.0 - 2020.0.1

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External links
http://helpx.adobe.com/security/products/robohelp-server/apsb21-87.html

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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.