SARA / Free Tools / CVE / CVE-2021-33045

CVE-2021-33045 — Dahua IP Camera Authentication Bypass Vulnerability

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.

CVSS
EPSS
94.17% (top 0.10%)
CWE
Published
2021-09-15T21:50:08.000Z
Last modified
2026-01-12T19:53:51.321Z
CVSS vector
CISA KEV — Actively Exploited
Added to KEV
2024-08-21
BOD 22-01 due
2024-09-11
Ransomware use
Unknown

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
na / Some Dahua IP Camera, Video Intercom, NVR, XVR devicesDahua IP Camera devices IPC-HX3XXX, IPC-HX5XXX, and IPC-HUM7XXX Buildtime before May, 2020, Video Intercom devices VTO75X95X, VTO65XXX, and VTH542XH, NVR devices NVR1XXX, NVR2XXX, NVR5XXX, and NVR6XX, XVR devices XVR4xxx, XVR5xxx, and XVR7xxx Buildtime before December, 2019.

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2024-08-21. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

Want this in your SOAR or SIEM?
SARA's API returns EPSS, CVSS, KEV, and an analyst-grade summary in one call.
Read the API reference →