Critical

Synology NAS Devices Targeted in Ransomware Attacks Exploiting Patched DSM Flaw

The Hacker News

November 3, 2026 at 7:43 AM

Actively Exploited

Overview

Synology is warning users to update their DiskStation Manager (DSM) software after discovering that attackers are exploiting a vulnerability that was patched in December 2024. The company noted that these ransomware attacks specifically target older versions of the DSM software, allowing threat actors to encrypt files and demand ransom from users. This situation affects anyone using Synology NAS devices that have not yet updated their software, putting sensitive data at risk. Synology's call to action emphasizes the importance of keeping software up to date to prevent falling victim to these types of attacks. Users should take immediate steps to secure their devices to avoid potential data loss and financial extortion.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Synology NAS devices running outdated versions of DiskStation Manager (DSM)
Action Required: Users are urged to update to the latest version of DiskStation Manager (DSM) to protect against the vulnerability.
Timeline: Disclosed on October 2023

Original Article Summary

Synology is urging customers to update the DiskStation Manager (DSM) software powering its Network Attached Storage (NAS) devices following ransomware attacks. The Taiwanese vendor said it observed threat actors exploiting a vulnerability patched in December 2024 to target devices running outdated versions of DSM. "These attacks aim to encrypt data and extort ransom," it said in a statement

Impact

Synology NAS devices running outdated versions of DiskStation Manager (DSM)

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Disclosed on October 2023

Remediation

Users are urged to update to the latest version of DiskStation Manager (DSM) to protect against the vulnerability.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Ransomware, Vulnerability, Update.

Read Original Article

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