CVE-2025-11178 is a local privilege escalation vulnerability identified in Acronis True Image for Windows platforms, including standard, Western Digital, and SanDisk branded versions. The root cause is DLL hijacking (CWE-427), where the application improperly loads dynamic link libraries from untrusted or user-controllable locations. This flaw allows an attacker with limited local privileges to execute arbitrary code with elevated privileges by placing a malicious DLL in a location where the application loads it instead of the legitimate one. The vulnerability affects versions prior to build 42386 for the standard Acronis True Image and prior to builds 42636 and 42679 for the Western Digital and SanDisk variants, respectively. Exploitation requires local access and user interaction, such as convincing a user to run the vulnerable application or open a crafted file. The CVSS v3.0 base score is 7.3, indicating high severity due to high impact on confidentiality, integrity, and availability, moderate attack complexity, and the need for limited privileges and user interaction. No public exploits have been reported yet, but the vulnerability poses a significant risk in environments where Acronis True Image is used for backup and recovery, as attackers could gain elevated privileges and compromise system security. The vulnerability was published on September 30, 2025, and no patches or mitigations have been linked yet, emphasizing the need for vigilance and proactive defense.

The impact of CVE-2025-11178 is substantial for organizations relying on Acronis True Image for backup and recovery on Windows systems. Successful exploitation allows attackers with local access to escalate privileges, potentially gaining administrative rights. This can lead to full system compromise, including unauthorized access to sensitive backup data, modification or deletion of backups, and disruption of backup services, severely affecting data integrity and availability. The elevated privileges could also be leveraged to deploy malware, establish persistence, or move laterally within networks. Organizations in sectors with high data protection requirements, such as finance, healthcare, and critical infrastructure, face increased risk of data breaches and operational disruption. Since exploitation requires local access and user interaction, insider threats or social engineering attacks could be vectors. The absence of known exploits in the wild currently limits immediate risk but does not diminish the urgency for mitigation given the high potential impact.

To mitigate CVE-2025-11178, organizations should: 1) Monitor Acronis communications closely and apply vendor patches immediately upon release for all affected builds and product variants. 2) Implement strict DLL loading policies using Windows features like AppLocker or Software Restriction Policies to prevent loading of unauthorized DLLs in the application directories. 3) Restrict local user permissions to the minimum necessary to reduce the risk of privilege escalation. 4) Educate users about the risks of running untrusted applications or opening suspicious files, reducing the likelihood of user interaction exploitation. 5) Employ endpoint detection and response (EDR) tools to detect anomalous DLL loading or privilege escalation attempts. 6) Regularly audit and monitor systems running Acronis True Image for signs of compromise or suspicious activity. 7) Consider isolating backup systems or limiting their network exposure to reduce attack surface. These steps go beyond generic advice by focusing on controlling DLL loading behavior and minimizing local privilege risks specific to this vulnerability.