Dahua IP Camera Authentication Bypass Vulnerability
n/a — Some Dahua IP Camera, Video Intercom, NVR, XVR devices
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.
9.8
99.6%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- Sep 15, 2021
- Modified
- Jun 17, 2026
- Added to KEV
- Aug 21, 2024
- Federal patch due
- Sep 11, 2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
2 foundWeaponization
Public repositories whose name or description references CVE-2021-33045, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
References
Frequently asked questions
What is CVE-2021-33045?
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.
How severe is CVE-2021-33045?
CVE-2021-33045 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).
Is CVE-2021-33045 actively exploited in the wild?
Yes. CVE-2021-33045 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Aug 21, 2024, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2021-33045?
99.6% - meaning FIRST.org's EPSS model estimates a 99.6% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2021-33045?
Yes - a public Nuclei template referencing CVE-2021-33045 exist in public repositories we checked. We also found 2 public GitHub repositories referencing this CVE.
What type of vulnerability is CVE-2021-33045?
CVE-2021-33045 is classified under CWE-287 (CWE-287 Improper Authentication).
Cross-checked against
Impactr finds and proves whether CVE-2021-33045 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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