D-Link warns of unpatched switch flaws in DGS-3130 series
Nov 6, 2026 · Summarized by Fundy Tech from BleepingComputer
D-Link has warned about multiple unpatched security flaws in its DGS-3130 series managed switches. It says attackers could change settings, leak data or disrupt service.
Key points
- Flaws affect DGS-3130 series managed Gigabit stackable switches.
- Attackers could alter configuration, leak SNMP communities or reset devices.
- D-Link says to disable DDP and restrict management access.
Why it matters
If your business network uses these switches, this could affect internet access and internal traffic. A device reset or configuration change can interrupt operations. Small IT teams should limit management access now and keep offline backups. That can help if the switches are exposed on a wider network than intended.
Who’s affected: DGS-3130 series managed switch users
What to do
- Disable DDP on affected switches.
- Remove default or unnecessary SNMP community strings.
- Restrict SSH, web UI and SNMP to management networks.
- Keep offline configuration backups and review logs.
Original reporting
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