High severity8.8NVD Advisory· Published Mar 23, 2020· Updated Jun 17, 2026

CVE-2020-8864

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-867, DIR-878, and DIR-882 routers with firmware 1.10B04. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from the lack of proper handling of empty passwords. An attacker can leverage this vulnerability to execute arbitrary code on the router. Was ZDI-CAN-9471.

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Affected products

Dlink/Dir 867 Firmware
cpe:2.3:o:dlink:dir-867_firmware:*:*:*:*:*:*:*:*
Range: <=1.10b04
Dlink/Dir878 Firmware
cpe:2.3:o:dlink:dir-878_firmware:*:*:*:*:*:*:*:*
Range: <=1.20b03
Dlink/Dir 882 Firmware
cpe:2.3:o:dlink:dir-882_firmware:*:*:*:*:*:*:*:*
Range: <=1.10b04
Dlink/DIR878llm-create
Range: = 1.10B04
Dlink/DIR882llm-create
Range: = 1.10B04
Dlink/DIR-867llm-create
Range: = 1.10B04
D-Link/Multiple Routersv5
Range: 1.10B04

Patches

Vulnerability mechanics

References

supportannouncement.us.dlink.com/announcement/publication.aspxnvdVendor Advisory
www.zerodayinitiative.com/advisories/ZDI-20-268/nvdThird Party AdvisoryVDB Entry

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