CVE-2020-8864

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 81.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-23 · updated 2026-06-17
Weakness: CWE-697

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.

Affected products

D-Link DIR-867: through 1.10b04
D-Link DIR-878: through 1.20b03
D-Link DIR-882: through 1.10b04

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10157
https://www.zerodayinitiative.com/advisories/ZDI-20-268/
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10157
https://www.zerodayinitiative.com/advisories/ZDI-20-268/

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