CVE-2021-21820 — CRITICAL (9.8)

Vulnerability Description

A hard-coded password vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to code execution. An attacker can send a sequence of requests to trigger this vulnerability.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Dlink	Dir-3040 Firmware	1.13b03
Dlink	Dir-3040	-

Related Weaknesses (CWE)

CWE-798

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1285ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1285ExploitThird Party Advisory

FAQ

What is CVE-2021-21820?

CVE-2021-21820 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A hard-coded password vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to code execution. An attacker can send...

How severe is CVE-2021-21820?

CVE-2021-21820 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-21820?

Check the references section above for vendor advisories and patch information. Affected products include: Dlink Dir-3040 Firmware, Dlink Dir-3040.