CVE-2026-28719
📋 TL;DR
This vulnerability allows unauthorized users to manipulate resources in Acronis Cyber Protect 17 due to improper authorization checks. It affects Acronis Cyber Protect 17 installations on both Linux and Windows systems before build 41186. Attackers could potentially modify or access resources they shouldn't have permission to.
💻 Affected Systems
- Acronis Cyber Protect 17
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
An attacker could manipulate critical system resources, potentially leading to data corruption, service disruption, or unauthorized access to sensitive information.
Likely Case
Limited resource manipulation within the application's scope, potentially affecting backup integrity or configuration settings.
If Mitigated
With proper network segmentation and access controls, impact would be limited to the application's own resources without system-wide compromise.
🎯 Exploit Status
Exploitation requires some level of access to the system, but the authorization bypass could be leveraged by users with limited permissions to escalate privileges.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Build 41186 or later
Vendor Advisory: https://security-advisory.acronis.com/advisories/SEC-8378
Restart Required: Yes
Instructions:
1. Download the latest version from Acronis official sources. 2. Run the installer to update to build 41186 or later. 3. Restart the Acronis Cyber Protect service. 4. Verify the update was successful.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Acronis Cyber Protect management interfaces to trusted networks only.
Access Control Hardening
allImplement strict access controls and monitor for unusual resource manipulation attempts.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Acronis Cyber Protect from untrusted networks
- Enable detailed logging and monitoring for unauthorized resource access attempts
🔍 How to Verify
Check if Vulnerable:
Check the Acronis Cyber Protect version in the management console or via command line. If version is before build 41186, the system is vulnerable.Check Version:
On Windows: Check via Acronis Management Console. On Linux: Check via acronis_cyber_protect --version or consult product documentation.Verify Fix Applied:
Verify the build number is 41186 or higher in the Acronis Cyber Protect management interface.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to resources
- Unexpected resource modifications
- Failed authorization checks
Network Indicators:
- Unusual traffic patterns to Acronis management ports
- Resource manipulation requests from unauthorized sources
SIEM Query:
Search for events where source_user has limited permissions but performs resource modifications in Acronis logs.