What’s Vulnerable › Vulnerabilities

CVE-2020-15633

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-23 · updated 2026-06-17
• Weakness: CWE-288

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 1.20B10_BETA. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP requests. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the router. Was ZDI-CAN-10835.

Affected products

• D-Link Dir-867 Firmware: through 1.20b10
• D-Link Dir-878 Firmware: through 1.20b05
• D-Link Dir-882 Firmware: all versions

References

• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10186
• https://www.zerodayinitiative.com/advisories/ZDI-20-881/
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10186
• https://www.zerodayinitiative.com/advisories/ZDI-20-881/

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