CVE-2021-27250 json
This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc…
published 2021-04-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14015
- cvss
- 6.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 67.4%
- EPSS 67.4% chance of exploitation in 30 days, percentile 99.3%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
67.39% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.5 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 3.3 | AV:A/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- D-Link DAP-2020
Classification
- Weakness
-
- CWE-73 External Control of File Name or Path
References
-
supportannouncement.us.dlink.com
/announcement/publication.aspx?name=SAP10201
patch, vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-21-205/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-27250
- NVD CVE-2021-27250
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.