Missing authentication in AOMEI Cyber Backup
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-8611
- 2026-10-03 Alias added: GHSA-r944-m35h-4q37
- 2026-10-20 EPSS moved to the 50th–90th percentile
References
Advisory 1
More AOMEI vulnerabilities
- TI-2026-10924 AOMEI Backupper Kernel Driver amwrtdrv.sys access control CVSS 4.0HIGH 8.5
- TI-2026-10923 AOMEI Dynamic Disk Manager Kernel Driver ddmdrv.sys access control CVSS 4.0HIGH 8.5
- TI-2026-10922 AOMEI Partition Assistant Kernel Driver ampa10.sys access control CVSS 4.0HIGH 8.5
- TI-2025-07881 Missing authentication in AOMEI Cyber Backup CVSS 3.0CRITICAL 9.8
- TI-2025-07883 Link following in AOMEI Backupper Workstation CVSS 3.0HIGH 7.3
Sources
- CVE-2025-8611 · CVE Program
- CVE-2025-8611 · NVD
- FIRST EPSS
- GHSA-r944-m35h-4q37 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences