CVE-2021-27249 — HIGH (8.8)

Vulnerability Description

This vulnerability allows network-adjacent attackers to execute arbitrary code 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. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11369.

CVSS Score

8.8

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Dlink	Dap-2020 Firmware	1.01
Dlink	Dap-2020	-

Related Weaknesses (CWE)

CWE-78

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP1PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-204/Third Party AdvisoryVDB Entry
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP1PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-204/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2021-27249?

CVE-2021-27249 is a vulnerability with a CVSS score of 8.8 (HIGH). This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit th...

How severe is CVE-2021-27249?

CVE-2021-27249 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-27249?

Check the references section above for vendor advisories and patch information. Affected products include: Dlink Dap-2020 Firmware, Dlink Dap-2020.