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Findings

CVE-2021-33044

Dahua IP Camera Authentication Bypass Vulnerability

Published Sep 15, 2021 · updated Jun 16, 2026 · dahuasecurity ipc-hum7xxx firmware

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.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 15, 2021 · Catalog

    Detected

    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.

  2. Aug 21, 2024 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Sep 11, 2024 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date Sep 11, 2024

Affected

  • cpe dahuasecurity/ipc-hum7xxx firmwareversion unspecified
  • cpe dahuasecurity/ipc-hx3xxx firmwareversion unspecified
  • cpe dahuasecurity/ipc-hx5xxx firmwareversion unspecified
  • cpe dahuasecurity/sd1a1 firmwareversion unspecified
  • cpe dahuasecurity/sd22 firmwareversion unspecified
  • cpe dahuasecurity/sd49 firmwareversion unspecified
  • cpe dahuasecurity/sd50 firmwareversion unspecified
  • cpe dahuasecurity/sd52c firmwareversion unspecified
  • cpe dahuasecurity/sd6al firmwareversion unspecified
  • cpe dahuasecurity/tpc-bf1241 firmwareversion unspecified
  • cpe dahuasecurity/tpc-bf2221 firmwareversion unspecified
  • cpe dahuasecurity/tpc-bf5x01 firmwareversion unspecified
  • vendor Dahua IP Camera Firmwareversion unspecified

Sources

  • CISA KEVCVE-2021-33044

    Dahua IP cameras and related products contain an authentication bypass vulnerability when the NetKeyboard type argument is specified by the client during authentication.

    cisa.gov
  • CVE.orgCVE-2021-33044

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2021-33044

    30-day exploitation probability 100.0%

    first.org
  • NIST NVDCVE-2021-33044

    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.

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References