D-Link DGS-3130-30TS interim advisory: multiple unpatched DDP and firmware zero-days (SAP10523)
D-Link DGS-3130-30TS (H/W Rev. B1); other DGS-3130 / switching platforms under investigation
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On Nov 6 2026 D-Link published interim security announcement SAP10523 for multiple vulnerabilities in the DGS-3130-30TS managed switch (hardware revision B1), reported by Giresh Kumar Enugu of Spectrum Community Solutions on Nov 2. The findings cover D-Link Discovery Protocol (DDP) authentication, access control and information handling, plus separate firmware-security issues around SSH configuration, OS credential protection, and firmware encryption/embedded keys. Successful exploitation on an affected network may allow sensitive device data disclosure, unauthorized admin/config changes, SNMP community exposure, service disruption or device resets. Examined firmware includes 2.00.B014, 2.00.B034, 2.04.000 and 2.04.001; other DGS-3130 models and D-Link switching platforms are under investigation. No corrective firmware is available yet; D-Link recommends disabling DDP (`no ddp`), removing default SNMP communities, and restricting management access. CVE identifiers are reserved or submitted but not yet public.
Why this severity: Network-adjacent management impact via DDP and related firmware weaknesses on enterprise SMB/metro switches; no public CVE IDs or firmware fix yet; researcher demonstrated exploitation in controlled testing
- Started
- Nov 6, 2026
Affected
- DGS-3130-30TS H/W Rev. B1 firmware 2.00.B014, 2.00.B034, 2.04.000, 2.04.001 (examined; individual findings may apply to subsets)
- Other DGS-3130 models and D-Link switching platforms: impact not yet confirmed
Fixed in
- No corrective firmware release identified yet; interim mitigations: disable DDP globally and on interfaces, remove default SNMP communities (public/private), restrict SSH/web/SNMP to management networks
Timeline3
D-Link publishes interim advisory SAP10523 before corrective firmware is available, urging customers to disable DDP, remove default SNMP communities, and restrict management access.
BleepingComputer reports D-Link's warning of multiple zero-days in DGS-3130 series switches.
D-Link receives coordinated disclosure of multiple DDP and firmware security findings on DGS-3130-30TS from Giresh Kumar Enugu (Spectrum Community Solutions).
Advisories1
News & write-ups1
Posts1
D-Link warns of multiple zero-days in DGS-3130 Series switches t.co/vZB6YH3vLV t.co/vZB6YH3vLV
Notes & caveats
CVE IDs reserved/submitted but not publicly disclosed as of the Nov 6 interim advisory. Disabling DDP does not address the separate firmware-security findings. Distinct from older tracked D-Link router/NAS CVEs.
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