CVE-2021-33044

9.8 CRITICAL CISA KEV - Actively Exploited

Published: September 15, 2021 Modified: November 10, 2025

Description

The identity authentication bypass vulnerability found in some Dahua products during the login process. Attackers can bypass device identity authentication by constructing malicious data packets.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html

Source: cybersecurity@dahuatech.com

Exploit Third Party Advisory VDB Entry

http://seclists.org/fulldisclosure/2021/Oct/13

Source: cybersecurity@dahuatech.com

Exploit Mailing List Third Party Advisory

https://www.dahuasecurity.com/support/cybersecurity/details/957

Source: cybersecurity@dahuatech.com

Vendor Advisory

http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Third Party Advisory VDB Entry

http://seclists.org/fulldisclosure/2021/Oct/13

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Mailing List Third Party Advisory

https://www.dahuasecurity.com/support/cybersecurity/details/957

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33044

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

7 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

94.3%

100th percentile

Exploitation Status

Actively Exploited

Remediation due: 2024-09-11

Weaknesses (CWE)

CWE-287

Affected Vendors

dahuasecurity

Related CVEs