CVE-2020-15896

Name: CVE-2020-15896
Creator: NVD / NIST
Published: 2020-07-22T19:15:12.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.72%

Last modified Jun 17, 2026

CVE-2020-15896 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.72% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.72%

74.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Dlink	Dap-1522 Firmware	1.41
Dlink	Dap-1522 Firmware	1.42

References

https://research.loginsoft.com/bugs/authentication-bypass-in-d-link-firmware-dap-1522/Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169Patch, Vendor Advisory
https://research.loginsoft.com/bugs/authentication-bypass-in-d-link-firmware-dap-1522/Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169Patch, Vendor Advisory

Timeline

Published: Jul 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15896?

How severe is CVE-2020-15896?

CVE-2020-15896 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.72% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15896?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15896?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST