# CVE-2021-33044: Dahua IP Camera Authentication Bypass Vulnerability

Source: https://junglewise.ai/threats/cve-2021-33044-dahua-ip-camera-authentication-bypass-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-08-21. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2021-33044 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2024-08-21

Dahua IP cameras and related products contain an authentication bypass vulnerability during the login process. Attackers can bypass device identity authentication by constructing malicious data packets, specifically when the NetKeyboard type argument is specified by the client.

Vendors: [Dahua](https://junglewise.ai/threats/vendors/dahua).

## Quick answers

**Is CVE-2021-33044 exploited in the wild?** Yes. CVE-2021-33044 is known to be exploited in the wild, first recorded on 21 August 2024. Treat it as urgent.

**How severe is CVE-2021-33044?** Critical severity, with a CVSS score of 9.8, published 21 August 2024.

**Which products and versions are affected?** Dahua SD41 firmware up to (excluding) 2.812.0000007.0.r.210706; Dahua SD49 firmware up to (excluding) 2.812.0000007.0.r.210706; Dahua IPC-HUM7XXX firmware up to (excluding) 2.820.0000000.5.r.210705; Dahua IPC-HX3XXX firmware up to (excluding) 2.800.0000000.29.r.210630; and 1 more.

**Is there a fix for CVE-2021-33044?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2021-33044 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2021-33044?** Check whether you run Dahua IP Camera Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Dahua SD41 firmware up to (excluding) 2.812.0000007.0.r.210706
- Dahua SD49 firmware up to (excluding) 2.812.0000007.0.r.210706
- Dahua IPC-HUM7XXX firmware up to (excluding) 2.820.0000000.5.r.210705
- Dahua IPC-HX3XXX firmware up to (excluding) 2.800.0000000.29.r.210630
- Dahua IPC-HX5XXX firmware up to (excluding) 2.820.0000000.18.r.210705

## Timeline

- 2021-09-30: disclosed: Initial analysis by NIST
- 2024-08-21: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2024-08-21: exploited: Reported as exploited in the wild in CISA KEV catalog

## Related threats

- [Dahua IP Camera Authentication Bypass Vulnerability](https://junglewise.ai/threats/cve-2021-33045-dahua-ip-camera-authentication-bypass-vulnerability)