Listen to this Post
CVE-2025-30411 is a critical vulnerability residing in Acronis Cyber Protect versions 15 and 16 due to improper authentication (CWE-1390) . This flaw allows a remote, unauthenticated attacker to bypass the software’s security checks entirely. By sending a specially crafted request to an affected Acronis component, the attacker can exploit the missing or flawed authentication mechanism . The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H) confirms that the attack can be launched over the network with low complexity, requiring no privileges or user interaction . A successful exploit results in a scope change, meaning the attacker can impact resources beyond the vulnerable component, leading to total compromise of system confidentiality, integrity, and availability .
Platform: Acronis Cyber Protect
Version: 15<41800, 16<39938
Vulnerability : Improper Authentication
Severity: Critical (CVSS 10.0)
date: 2026-02-19
Prediction: Patch already available
What Undercode Say:
Analytics
The vulnerability affects two major release lines: Acronis Cyber Protect 15 (before build 41800) and Acronis Cyber Protect 16 (before build 39938) . Both Windows and Linux platforms are impacted . The issue is classified under CWE-1390, which describes a weakness where the product does not properly verify the identity of a user or actor . Security updates were released by Acronis around early June 2025, providing fixes in the form of Acronis Cyber Protect 16 Update 4 and Acronis Cyber Protect 15 Update 7 .
How Exploit:
As of the latest reports, no public proof-of-concept (PoC) code or active exploitation in the wild has been confirmed for CVE-2025-30411 . However, given the critical nature and the low complexity of the attack vector, it is highly likely that functional exploits could be developed quickly. The attack would involve network communication with the Acronis management port to bypass authentication and execute arbitrary calls.
Protection from this CVE
The primary and most effective mitigation is to update to the fixed builds immediately. Administrators should upgrade to Acronis Cyber Protect 15 build 41800 or later, or Acronis Cyber Protect 16 build 39938 or later .
If immediate patching is not possible, interim protections include:
1. Restrict network access to the Acronis Cyber Protect management interface using firewalls, allowing only trusted IP addresses .
2. Implement network segmentation to isolate the backup infrastructure .
3. Monitor logs for any suspicious or unauthorized access attempts to the Acronis services .
To check the current version on a Linux system, administrators can use:
Check the installed Acronis package version (package name may vary)
dpkg -l | grep acronis
or
rpm -qa | grep -i acronis
For Windows (PowerShell)
Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like "Acronis"} | Select-Object Name, Version
To apply the patch on a Linux system:
Download the latest update package from the official Acronis website Install the package (example for .deb) sudo dpkg -i AcronisCyberProtect_15_Update_7.deb or for .rpm sudo rpm -Uvh AcronisCyberProtect_15_Update_7.rpm Restart the Acronis services sudo systemctl restart acronis_
To apply the patch on a Windows system (PowerShell as Administrator):
Download the update executable Run the installer silently Start-Process -FilePath "AcronisCyberProtect_16_Update_4.exe" -ArgumentList "/verysilent /norestart" -Wait Restart the Acronis Managed Machine Service Restart-Service -Name "AcronisManagedMachineService"
Impact
Successful exploitation of CVE-2025-30411 grants an attacker unauthenticated, remote access to the core functions of the Acronis Cyber Protect software . The impact is a complete compromise of the “CIA triad”:
– Confidentiality: An attacker can disclose all sensitive data managed or protected by the software, including backups, system files, and credentials .
– Integrity: The attacker can manipulate or corrupt sensitive data and backup archives, potentially injecting malware into backups or altering system configurations .
– Availability: The attacker can disrupt backup and recovery services, delete critical data, or render the system inoperable, which directly impacts disaster recovery capabilities .
Because backup and security software holds the keys to the kingdom, a compromise here can undermine the entire IT infrastructure’s resilience, leading to operational downtime, data breaches, and potential regulatory penalties .
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
