Is CVE-2021-33045 actively exploited?

CVE-2021-33045 has no public evidence of in-the-wild exploitation as of 2026-01-12.

What is the CVSS score for CVE-2021-33045?

CVE-2021-33045 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-33045?

Patch guidance is available from dahuasecurity security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-33045.

Fix CVE-2021-33045 - CRITICAL

Q: Which products are affected by CVE-2021-33045?

19 products: dahuasecurity ipc-hum7xxx firmware, dahuasecurity ipc-hx3xxx firmware, dahuasecurity ipc-hx5xxx firmware, dahuasecurity nvr-1xxx firmware, dahuasecurity nvr-2xxx firmware, and 14 more.

Description

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-287 · Improper Authentication CWE-287 · Improper Authentication

Metadata

Primary Vendor: DAHUASECURITY
Published: 9/15/2021
Last Modified: 1/12/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

dahuasecurity : ipc-hum7xxx_firmwaredahuasecurity : ipc-hx3xxx_firmwaredahuasecurity : ipc-hx5xxx_firmwaredahuasecurity : nvr-1xxx_firmwaredahuasecurity : nvr-2xxx_firmwaredahuasecurity : nvr-4xxx_firmwaredahuasecurity : nvr-5xxx_firmwaredahuasecurity : nvr-6xx_firmwaredahuasecurity : vth-542xh_firmwaredahuasecurity : vto-65xxx_firmwaredahuasecurity : vto-75x95x_firmwaredahuasecurity : xvr-4x04_firmwaredahuasecurity : xvr-4x08_firmwaredahuasecurity : xvr-4x04_firmwaredahuasecurity : xvr-5x04_firmwaredahuasecurity : xvr-5x08_firmwaredahuasecurity : xvr-5x16_firmwaredahuasecurity : xvr-7x16_firmwaredahuasecurity : xvr-7x32_firmware

Remediation Guidance

Executive Summary

View on NIST NVD