6.5

CVE-2021-27250: d-link dap-2020 External Control of File Name or Path

CVSS: 6.5v3.0MediumModified
Published 14-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-27250 is a medium (CVSS 6.5) External Control of File Name or Path vulnerability in d-link dap-2020. EPSS estimates a 67.39% chance of exploitation in the next 30 days, higher than 99.3% of scored vulnerabilities.

Overall risk
39/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.0 (CVE.org)
EPSS score
67.39%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

67.39%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 67.39% on 19-09-2026

19-09-202619-10-2026
EPSS score
67.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

D-link1 product
Dlink1 product

2 vendors · 2 products

References

2 links