What’s Vulnerable › Vulnerabilities

CVE-2020-27864

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-12 · updated 2026-06-17
• Weakness: CWE-77

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HNAP service, which listens on TCP port 80 by default. When parsing the Authorization request header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-10880.

Affected products

• D-Link DAP-1860: through 1.04b03

References

• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197
• https://www.zerodayinitiative.com/advisories/ZDI-20-1428/
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10197
• https://www.zerodayinitiative.com/advisories/ZDI-20-1428/

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