CVE-2021-27250
This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 67.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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 3.1
- 6.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 67.39% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-73
- Affected
- dlink/dap-2020 firmware
- Source
- zdi-disclosures@trendmicro.com
EPSS 67.4% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-205/Third Party Advisory, VDB Entry
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-205/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.