What’s Vulnerable › Vulnerabilities

CVE-2020-15896

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-22 · updated 2026-06-17
• Weakness: CWE-287

Description

An authentication-bypass issue was discovered on D-Link DAP-1522 devices 1.4x before 1.10b04Beta02. There exist a few pages that are directly accessible by any unauthorized user, e.g., logout.php and login.php. This occurs because of checking the value of NO_NEED_AUTH. If the value of NO_NEED_AUTH is 1, the user has direct access to the webpage without any authentication. By appending a query string NO_NEED_AUTH with the value of 1 to any protected URL, any unauthorized user can access the application directly, as demonstrated by bsc_lan.php?NO_NEED_AUTH=1.

Affected products

• Dlink Dap-1522 Firmware: 1.41, 1.42

References

• https://research.loginsoft.com/bugs/authentication-bypass-in-d-link-firmware-dap-1522/
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169
• https://research.loginsoft.com/bugs/authentication-bypass-in-d-link-firmware-dap-1522/
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169

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