The Vulnerability Incident
Systems administrators are often the first to point out lax security policies in other setups, but occasionally fall victim to similar oversights. A Reddit user experienced a ransomware attack that encrypted files on their Synology DS918+ network attached storage device following several unforced security errors.
The affected unit had its web interface directly exposed to the internet and was roughly 18 months out of date with security patches, demonstrating how complacency can undermine hardware safety.
Investigation and Backup Recovery
Because the owner maintained a 3-2-1 backup strategy, no critical data was permanently lost. The storage drives were removed and attached to a Proxmox machine for inspection. Because Synology's DSM operating system uses mdraid, the disks could be mounted externally. System logs and operating system files indicated the breach likely exploited the CVE-2024-10441 remote code execution vulnerability, which had been disclosed a year and a half prior.
Security Best Practices
Industry best practices dictate that network-attached devices should never be exposed directly to the internet without protective layers such as a VPN or an SSH tunnel. Services like Tailscale offer straightforward virtual private network setups that can secure home installations.
Update Mechanisms and Notifications
Synology previously published advisories regarding the exploit, though system update behaviors can complicate maintenance. Users have noted that the device user interface may report being up to date while critical security patches require manual installation. Documentation for DSM indicates that units released from 2025 onward feature automatic updates, while older models require explicit configuration.
Additionally, critics point out that the manufacturer lacks direct email channels to alert customers to critical security vulnerabilities, leaving regular consumers unaware of important bulletins. Furthermore, specific package updates, such as patches for PHP vulnerabilities, often need to be installed independently of the main operating system.
