CVE-2021-33044
KEVCRITICAL 9.8EPSS 100.0%
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.
- Affected
- Some Dahua IP Camera, Video Intercom, PTZ Dome Camera, Thermal Camera devices
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 10.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C - EPSS
- 99.99% chance of exploitation in the next 30 days, 100th percentile
- CISA KEV
- added 2024-08-21
- Nuclei
- critical · CWE-287
- Published
- 2021-09-15
- Updated
- 2026-01-12
Proof-of-concept exploits (19)
- http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html
- http://seclists.org/fulldisclosure/2021/Oct/13
- Nxychx/TVT-NVR1★ · 2023-01-10
- Spy0x7/CVE-2021-330445★ · 2021-10-18
- Teryila/DahuaConsole0★ · 2025-07-31
- Teryila/NoteMeDahua0★ · 2025-08-02
- WhaleFell/CameraHack244★ · 2022-08-03
- blkgzs/CameraHack34★ · 2022-07-13
- haingn/LoHongCam-CVE-2021-330444★ · 2023-10-22
- mcw0/DahuaConsole323★ · 2025-08-08
- mcw0/PoC780★ · 2023-01-12
- naycha/NVR-CONFIG0★ · 2023-01-10
- naycha/TVT-NVR0★ · 2023-01-10
- naycha/TVT-NVR-config1★ · 2023-01-10
- naycha/TVT-config1★ · 2023-01-10
- readloud/PoC0★ · 2022-10-16
- Baza-NATO/CVE-2021-330441★ · 2026-01-25
- eagle-nett/DAHUA_AUTH-BYPASS-CVE-2021-330441★ · 2026-04-12
- litndat/Camera-Dahua-Research-l-h-ng-CVE-2021-330440★ · 2026-06-24
Nuclei templates (1)
Exploit collections (2)
- dahua-cve-2021-33044-authentication-bypass.ymlchaitin/xray
- CVE-2021-33044.yamlzan8in/afrog