Zero-day vulnerability in Daemon Tools

Embedded malicious code (backdoor)

Vulnerability details

Advisory: SB2026050672 - Backdoor in DAEMON Tools software

Vulnerable component: Daemon Tools

CVE-ID:

CVSSv3 score: 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

CWE-ID: CWE-506 - Embedded Malicious Code

Description:

The vulnerability allows a remote attacker to gain unauthorized access to the system.

The vulnerability exists due to presence of embedded malicious functionality (aka backdoor) in the application's installer, downloaded from the official website. A remote attacker can compromise the affected system after installing the infected version of DAEMON Tools software.

Note, the vendor's website was distributing infected version since April 8, 2026. 

External links:

https://securelist.com/tr/daemon-tools-backdoor/119654/

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.