CVE-2021-27250
lowpriority · attend · 50EPSS 0.674 · 99 %ileEUUSEPSS · scored 2026-10-27
This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. When parsing the errorpage request parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-11856.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–6.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2021-27250cnnvd
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021100105cnnvd
- https://www.zerodayinitiative.com/advisories/ZDI-21-205/cnnvd
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201enisa_euvd
- https://www.zerodayinitiative.com/advisories/ZDI-21-205/enisa_euvd
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201PatchVendor Advisorynvd
- https://www.zerodayinitiative.com/advisories/ZDI-21-205/Third Party AdvisoryVDB Entrynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan