CVE-2026-0705 in Cloud Manager
Summary
by MITRE • 01/27/2026
Local privilege escalation due to insecure folder permissions. The following products are affected: Acronis Cloud Manager (Windows) before build 6.4.25342.354.
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Analysis
by VulDB Data Team • 01/27/2026
The vulnerability identified as CVE-2026-0705 represents a critical local privilege escalation flaw within Acronis Cloud Manager for Windows platforms. This security weakness stems from inadequate folder permission configurations that allow unauthorized local users to elevate their privileges and gain administrative access to the affected system. The vulnerability specifically impacts versions prior to build 6.4.25342.354 of the Acronis Cloud Manager application, making all older installations susceptible to exploitation.
The technical root cause of this vulnerability lies in the improper implementation of access control mechanisms within the application's file system structure. When Acronis Cloud Manager creates or manages specific folders during its operation, it fails to establish appropriate permission controls that would normally restrict access to privileged system resources. This misconfiguration creates a scenario where local users can manipulate or access sensitive directories that should only be accessible to administrators or the application itself. The flaw operates under the principle that insufficient discretionary access control (DAC) allows unauthorized users to gain elevated privileges through manipulation of system components.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with a potential foothold for broader system compromise. Once a local user successfully exploits this weakness, they can potentially access sensitive system files, modify application configurations, or even install malicious software with administrative privileges. This capability significantly increases the attack surface and allows for persistent access to the compromised system. The vulnerability aligns with CWE-276, which specifically addresses improper permissions for a resource, and can be categorized under the ATT&CK technique T1068 for Local Privilege Escalation. The affected environment becomes particularly vulnerable because Acronis Cloud Manager typically requires elevated privileges to function properly, making the insecure folder permissions a direct pathway to administrative control.
Organizations utilizing Acronis Cloud Manager should immediately implement mitigations to address this vulnerability. The primary recommendation involves updating to build 6.4.25342.354 or later, which contains the necessary permission fixes. Additionally, system administrators should conduct thorough audits of folder permissions within the Acronis Cloud Manager installation directory to ensure that only authorized users and processes have appropriate access levels. The mitigation strategy should include implementing the principle of least privilege, where all system components operate with minimal required permissions. Security monitoring should be enhanced to detect unauthorized access attempts to sensitive system directories, and regular vulnerability assessments should be performed to identify similar permission-related issues within other system components. The remediation process must also consider the broader security posture of the organization, as this vulnerability demonstrates the importance of proper access control implementation across all system components, particularly those with elevated privileges.