CVE-2021-33044

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
0,9427
Percentile
1,0th
Updated

EPSS Score Trend (Last 91 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

Ipc-Hx5Xxx Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Ipc-Hx5Xxx Firmware
Version Range Affected
To 2.820.0000000.18.r.210705 (exclusive)
cpe:2.3:o:dahuasecurity:ipc-hx5xxx_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Sd22 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Sd22 Firmware
Version Range Affected
To 2.812.0000007.0.r.210706 (exclusive)
cpe:2.3:o:dahuasecurity:sd22_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Sd6Al Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Sd6Al Firmware
Version Range Affected
To 2.812.0000007.0.r.210706 (exclusive)
cpe:2.3:o:dahuasecurity:sd6al_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Tpc-Bf1241 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Tpc-Bf1241 Firmware
Version Range Affected
To 2.630.0000000.6.r.210707 (exclusive)
cpe:2.3:o:dahuasecurity:tpc-bf1241_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

Sd1A1 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Sd1A1 Firmware
Version Range Affected
To 2.812.0000007.0.r.210706 (exclusive)
cpe:2.3:o:dahuasecurity:sd1a1_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Sd49 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Sd49 Firmware
Version Range Affected
To 2.812.0000007.0.r.210706 (exclusive)
cpe:2.3:o:dahuasecurity:sd49_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Sd50 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Sd50 Firmware
Version Range Affected
To 2.812.0000007.0.r.210706 (exclusive)
cpe:2.3:o:dahuasecurity:sd50_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Sd52C Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Sd52C Firmware
Version Range Affected
To 2.812.0000007.0.r.210706 (exclusive)
cpe:2.3:o:dahuasecurity:sd52c_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

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

Tpc-Bf5X21 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Tpc-Bf5X21 Firmware
Version Range Affected
To 2.630.0000000.8.r.210630 (exclusive)
cpe:2.3:o:dahuasecurity:tpc-bf5x21_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Tpc-Sd8X21 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Tpc-Sd8X21 Firmware
Version Range Affected
To 2.630.0000000.9.r.210706 (exclusive)
cpe:2.3:o:dahuasecurity:tpc-sd8x21_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

Tpc-Bf2221 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Tpc-Bf2221 Firmware
Version Range Affected
To 2.630.0000000.10.r.210707 (exclusive)
cpe:2.3:o:dahuasecurity:tpc-bf2221_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Tpc-Bf5X01 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Tpc-Bf5X01 Firmware
Version Range Affected
To 2.630.0000000.12.r.210707 (exclusive)
cpe:2.3:o:dahuasecurity:tpc-bf5x01_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

Tpc-Pt8X21B Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Tpc-Pt8X21B Firmware
Version Range Affected
To 2.630.0000000.10.r.210701 (exclusive)
cpe:2.3:o:dahuasecurity:tpc-pt8x21b_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Tpc-Sd2221 Firmware by Dahuasecurity

Product Information
Vendor Dahuasecurity
Product Tpc-Sd2221 Firmware
Version Range Affected
To 2.630.0000000.7.r.210707 (inclusive)
cpe:2.3:o:dahuasecurity:tpc-sd2221_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