CVE-2026-0705 is a vulnerability classified under CWE-276 (Incorrect Default Permissions) affecting Acronis Cloud Manager on Windows platforms prior to build 6.4.25342.354. The root cause is insecure folder permissions that allow a local user with limited privileges to escalate their access rights to higher privilege levels. This local privilege escalation (LPE) flaw can be exploited by an attacker who already has some level of access to the system but lacks administrative privileges. The CVSS v3.0 score of 6.7 reflects a medium severity, considering the attack vector is local (AV:L), attack complexity is high (AC:H), privileges required are low (PR:L), and user interaction is required (UI:R). The vulnerability impacts confidentiality, integrity, and availability (all rated high in the CVSS vector), indicating that successful exploitation could allow unauthorized access to sensitive data, modification of system configurations, or disruption of services. No public exploits or patches are currently available, but the vulnerability is officially published and assigned by Acronis. The insecure folder permissions likely pertain to directories used by the Acronis Cloud Manager service or application components, which if writable or modifiable by low-privileged users, can be leveraged to execute arbitrary code or replace binaries with malicious versions. This vulnerability underscores the importance of secure default permissions and regular audits of access controls in cloud management software.

For European organizations, the impact of CVE-2026-0705 can be significant, especially for those relying on Acronis Cloud Manager for cloud infrastructure management and backup services. Successful exploitation could allow attackers to gain elevated privileges on critical management servers, leading to unauthorized access to sensitive data, disruption of cloud services, or further lateral movement within the network. This could compromise business continuity, data confidentiality, and regulatory compliance, particularly under GDPR requirements. The medium severity score suggests that while exploitation is not trivial, the consequences of a successful attack are substantial. Organizations with multi-tenant cloud environments or those managing critical infrastructure are at higher risk. Additionally, the requirement for local access means that insider threats or attackers who have already compromised lower-level accounts pose the greatest danger. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once patches are released or if the vulnerability becomes publicly known.

European organizations should implement the following specific mitigations: 1) Immediately audit and harden folder and file permissions related to Acronis Cloud Manager installations, ensuring that only authorized administrative users have write or modify access. 2) Restrict local user accounts and limit the number of users with local access to systems running Acronis Cloud Manager. 3) Monitor system logs and security events for unusual privilege escalation attempts or unauthorized modifications to Acronis-related directories. 4) Apply the official patch or update from Acronis as soon as it becomes available, and verify the build version is at or above 6.4.25342.354. 5) Employ application whitelisting and integrity monitoring tools to detect unauthorized changes to critical files. 6) Conduct regular security training to raise awareness about the risks of local privilege escalation and the importance of safeguarding local credentials. 7) Consider network segmentation to isolate management servers and reduce the attack surface. These steps go beyond generic advice by focusing on permission management, monitoring, and proactive patching tailored to this specific vulnerability.