CVE-2021-33045

KEV
Published: Set 15, 2021 Last Modified: Gen 13, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
HIGH 10,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: complete
Integrity: complete
Availability: complete

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,9417
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

287

Improper Authentication

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability Access Control
Potential Impacts:
Read Application Data Gain Privileges Or Assume Identity Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: ICS/OT, Not Technology-Specific, Web Based
Likelihood of Exploit: High
View CWE Details
Operating System

Nvr-5Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Nvr-5Xxx Firmware
Version Range Affected
To 4.001.0000000.0.r.210710 (exclusive)
cpe:2.3:o:dahuasecurity:nvr-5xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Nvr-4Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Nvr-4Xxx Firmware
Version Range Affected
To 4.001.0000005.1.r.210713 (exclusive)
cpe:2.3:o:dahuasecurity:nvr-4xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-7X16 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-7X16 Firmware
Version Range Affected
To 4.001.0000003.1.r.210710 (exclusive)
cpe:2.3:o:dahuasecurity:xvr-7x16_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Ipc-Hx5Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Ipc-Hx5Xxx Firmware
Version Range Affected
To 2.820.0000000.5.r.210705 (exclusive)
cpe:2.3:o:dahuasecurity:ipc-hx5xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-5X04 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-5X04 Firmware
Version Range Affected
To 4.001.0000003.1.r.210710 (exclusive)
cpe:2.3:o:dahuasecurity:xvr-5x04_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vto-65Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Vto-65Xxx Firmware
Version Range Affected
To 4.300.0000004.0.r.210715 (exclusive)
cpe:2.3:o:dahuasecurity:vto-65xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-5X16 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-5X16 Firmware
Version Range Affected
To 4.001.0000003.1.r.210710 (exclusive)
cpe:2.3:o:dahuasecurity:xvr-5x16_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-4X04 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-4X04 Firmware
Version -
cpe:2.3:o:dahuasecurity:xvr-4x04_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-7X32 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-7X32 Firmware
Version Range Affected
To 4.001.0000003.1.r.210710 (exclusive)
cpe:2.3:o:dahuasecurity:xvr-7x32_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vth-542Xh Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Vth-542Xh Firmware
Version Range Affected
To 4.500.0000002.0.r.210715 (exclusive)
cpe:2.3:o:dahuasecurity:vth-542xh_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Nvr-2Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Nvr-2Xxx Firmware
Version Range Affected
To 4.001.0000000.1.r.210710 (exclusive)
cpe:2.3:o:dahuasecurity:nvr-2xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-4X08 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-4X08 Firmware
Version Range Affected
To 4.001.0000001.1.r.210709 (exclusive)
cpe:2.3:o:dahuasecurity:xvr-4x08_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Nvr-6Xx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Nvr-6Xx Firmware
Version Range Affected
To 4.001.0000001.1.r.210716 (exclusive)
cpe:2.3:o:dahuasecurity:nvr-6xx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Vto-75X95X Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Vto-75X95X Firmware
Version Range Affected
To 4.300.0000003.0.r.210714 (exclusive)
cpe:2.3:o:dahuasecurity:vto-75x95x_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-5X08 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-5X08 Firmware
Version Range Affected
To 4.001.0000003.1.r.210710 (exclusive)
cpe:2.3:o:dahuasecurity:xvr-5x08_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Ipc-Hum7Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Ipc-Hum7Xxx Firmware
Version Range Affected
To 2.820.0000000.5.r.210705 (exclusive)
cpe:2.3:o:dahuasecurity:ipc-hum7xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Xvr-4X04 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Xvr-4X04 Firmware
Version Range Affected
To 4.001.0000001.1.r.210709 (exclusive)
cpe:2.3:o:dahuasecurity:xvr-4x04_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Ipc-Hx3Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Ipc-Hx3Xxx Firmware
Version Range Affected
To 2.800.0000000.29.r.210630 (exclusive)
cpe:2.3:o:dahuasecurity:ipc-hx3xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Nvr-1Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Nvr-1Xxx Firmware
Version Range Affected
To 4.001.0000005.1.r.210709 (exclusive)
cpe:2.3:o:dahuasecurity:nvr-1xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
http://packetstormsecurity.com/files/164423/Dahua-Authentic…
http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html
http://seclists.org/fulldisclosure/2021/Oct/13
http://seclists.org/fulldisclosure/2021/Oct/13
https://www.dahuasecurity.com/support/cybersecurity/details…
https://www.dahuasecurity.com/support/cybersecurity/details/957
http://packetstormsecurity.com/files/164423/Dahua-Authentic…
http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html
http://seclists.org/fulldisclosure/2021/Oct/13
http://seclists.org/fulldisclosure/2021/Oct/13
https://www.dahuasecurity.com/support/cybersecurity/details…
https://www.dahuasecurity.com/support/cybersecurity/details/957