Vulnerability · Published Aug 20, 2025 · Assigned by zdi

CVE-2025-8611AOMEI Cyber Backup Missing Authentication for Critical Function Remote Code Execution Vulnerability

Critical 9.8

In plain English

A critical-severity missing authentication in Cyber Backup from AOMEI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).

Severity (CVSS 3.0)9.8Critical

Exploit odds (30 days)0.6%top 48.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

AOMEI Cyber Backup Missing Authentication for Critical Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of AOMEI Cyber Backup. Authentication is not required to exploit this vulnerability. The specific flaw exists within the DaoService service, which listens on TCP port 9074 by default. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-26158.

Affected products (as reported)

Vendor	Product	Versions
AOMEI	Cyber Backup	3.7.0

Weakness: CWE-306 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-25-807 x_research-advisory