CVE-2025-30411 is a critical security vulnerability identified in Acronis Cyber Protect 16 and 15, affecting both Linux and Windows platforms before builds 39938 and 41800 respectively. The vulnerability is classified under CWE-1390, which involves improper authentication, allowing unauthorized attackers to bypass authentication controls. This flaw enables attackers to access, disclose, and manipulate sensitive data managed by the Acronis Cyber Protect software without requiring any privileges or user interaction. The vulnerability has a CVSS v3.0 base score of 10.0, reflecting its critical nature with attack vector network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and scope changed (S:C). The impact metrics indicate high confidentiality (C:H), integrity (I:H), and availability (A:H) impacts, meaning an attacker can fully compromise the system’s data and operations. Acronis Cyber Protect is widely used for backup, disaster recovery, and endpoint protection, making this vulnerability particularly dangerous as it could allow attackers to undermine these critical security functions. Although no exploits have been reported in the wild yet, the vulnerability’s characteristics suggest it could be weaponized quickly. The lack of available patches at the time of disclosure increases the urgency for organizations to implement interim mitigations and monitor for updates from Acronis. The vulnerability affects multiple versions and platforms, increasing the scope and potential impact globally.

The impact of CVE-2025-30411 is severe and far-reaching for organizations relying on Acronis Cyber Protect for backup, disaster recovery, and endpoint security. Successful exploitation allows attackers to bypass authentication controls, leading to unauthorized disclosure and manipulation of sensitive data. This can result in data breaches, loss of data integrity, and disruption or denial of backup and recovery services. Organizations could face operational downtime, loss of critical business data, and potential regulatory penalties due to compromised data confidentiality and integrity. The vulnerability’s network accessibility and lack of required privileges or user interaction make it highly exploitable remotely, increasing the risk of widespread attacks. Attackers could leverage this flaw to implant malware, ransomware, or conduct espionage by manipulating backup data or security configurations. The critical nature of this vulnerability threatens the trustworthiness of backup solutions, which are foundational to organizational resilience and incident response. Industries with high data sensitivity such as finance, healthcare, government, and critical infrastructure are particularly vulnerable to severe consequences.

1. Immediate application of patches and updates from Acronis once they are released is the most effective mitigation. Monitor Acronis official channels for patch announcements. 2. Until patches are available, restrict network access to Acronis Cyber Protect management interfaces using firewalls and network segmentation to limit exposure to trusted administrators only. 3. Implement strict access controls and multi-factor authentication on systems hosting Acronis Cyber Protect to reduce the risk of unauthorized access. 4. Monitor logs and network traffic for unusual activity related to Acronis Cyber Protect services, including unexpected authentication attempts or data access patterns. 5. Employ intrusion detection and prevention systems (IDS/IPS) tuned to detect anomalous behavior targeting backup and security software. 6. Conduct regular backups of backup configurations and critical data to offline or air-gapped storage to ensure recovery capability in case of compromise. 7. Educate IT and security teams about the vulnerability and the importance of rapid response to suspicious activity involving backup infrastructure. 8. Consider temporary disabling or isolating vulnerable components if feasible until patches are applied. 9. Collaborate with Acronis support for guidance and incident response assistance if exploitation is suspected.