Which products and versions are affected by CVE-2021-27250?

Affected: Dap-2020 Firmware (Dlink) versions 1.01-rc001; DAP-2020 versions >= v1.01rc001. The full list is in the CVE brief.

Is CVE-2021-27250 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-27250 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-27250?

No public exploit code is known.

Is there a fix for CVE-2021-27250?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2021-27250 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2021-27250

Medium

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points.

Published Apr 14, 2021 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2021-27250 is a medium-severity vulnerability (CVSS 6.5 v3.1) affecting Dap-2020 Firmware (Dlink), DAP-2020.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 67% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

6.5

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

EPSS (30-day exploit likelihood)

67%

Higher than 99.3% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2021-27250 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Dap-2020 FirmwareDlink	1.01-rc001	n/a
DAP-2020	>= v1.01rc001	n/a

Timeline

Publicly disclosed
Apr 14, 2021
Last updated
Nov 21, 2024

Weakness Type

CWE-73 External Control of File Name or Path

References

FAQ

Common Questions.

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points.
Affected: Dap-2020 Firmware (Dlink) versions 1.01-rc001; DAP-2020 versions >= v1.01rc001. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2021-27250 Running On Your Attack Surface?

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