CVE-2025-30410
📋 TL;DR
This critical vulnerability allows attackers to access and manipulate sensitive data without authentication in Acronis Cyber Protect products. It affects Acronis Cyber Protect Cloud Agent and Acronis Cyber Protect 15/16 across Linux, macOS, and Windows platforms. Organizations using these products are at risk of data breaches and unauthorized system modifications.
💻 Affected Systems
- Acronis Cyber Protect Cloud Agent
- Acronis Cyber Protect 16
- Acronis Cyber Protect 15
⚠️ 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
Complete compromise of protected data including backups, system configurations, and credentials leading to data theft, ransomware deployment, or system destruction.
Likely Case
Unauthorized access to sensitive backup data, configuration files, and potential privilege escalation within the Acronis ecosystem.
If Mitigated
Limited impact if network segmentation prevents access to vulnerable interfaces and proper authentication controls are enforced externally.
🎯 Exploit Status
Exploitation requires network access to the vulnerable interface but no authentication, making it straightforward for attackers with access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Acronis Cyber Protect Cloud Agent build 39870+, Acronis Cyber Protect 16 build 39938+, Acronis Cyber Protect 15 build 41800+
Vendor Advisory: https://security-advisory.acronis.com/advisories/SEC-8641
Restart Required: Yes
Instructions:
1. Download the latest version from Acronis official sources. 2. Install the update following vendor documentation. 3. Restart the Acronis services or reboot the system as required. 4. Verify the update was successful using version checking commands.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Acronis management interfaces to trusted networks only.
# Example firewall rule (Linux): iptables -A INPUT -p tcp --dport [Acronis_port] -s [trusted_network] -j ACCEPT
# Windows: New-NetFirewallRule -DisplayName 'Block Acronis External' -Direction Inbound -Protocol TCP -LocalPort [Acronis_port] -RemoteAddress NotIn ([trusted_ips]) -Action Block
Access Control Lists
allImplement additional network-level authentication or access controls for Acronis services.
# Configure host-based firewall rules to limit source IPs
# Use network segmentation/VLANs to isolate Acronis management traffic
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Acronis management interfaces from untrusted networks.
- Deploy additional authentication mechanisms (VPN, jump hosts) for accessing Acronis management interfaces.
🔍 How to Verify
Check if Vulnerable:
Check the Acronis agent version against affected builds. On Windows: Check Programs and Features or Acronis Management Console. On Linux/macOS: Check installed package version or agent status output.Check Version:
Windows: Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like '*Acronis*'} | Select Name, Version
Linux: dpkg -l | grep acronis OR rpm -qa | grep acronis
macOS: pkgutil --pkgs | grep acronisVerify Fix Applied:
Verify the installed version meets or exceeds the patched build numbers: Cloud Agent ≥39870, Cyber Protect 16 ≥39938, Cyber Protect 15 ≥41800.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to Acronis management ports
- Unexpected configuration changes in Acronis logs
- Authentication bypass events in application logs
Network Indicators:
- Unusual traffic patterns to Acronis management ports (typically TCP 9876, 9877, or custom)
- External IP addresses accessing Acronis interfaces without prior authentication
SIEM Query:
source="acronis_logs" AND (event_type="auth_failure" OR event_type="config_change") | stats count by src_ip, user