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.
Published: 2021-09-15
Score: 9.8 Critical
EPSS: 94.2% High
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

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History

Mon, 10 Nov 2025 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Dahuasecurity sd49
Dahuasecurity sd49 Firmware
CPEs cpe:2.3:h:dahuasecurity:sd41:-:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:sd41_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:dahuasecurity:sd49:-:*:*:*:*:*:*:*
cpe:2.3:o:dahuasecurity:sd49_firmware:*:*:*:*:*:*:*:*
Vendors & Products Dahuasecurity sd41
Dahuasecurity sd41 Firmware
Dahuasecurity sd49
Dahuasecurity sd49 Firmware

Wed, 22 Oct 2025 00:30:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Wed, 30 Jul 2025 02:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Dahuasecurity Ipc-hum7xxx Ipc-hum7xxx Firmware Ipc-hx3xxx Ipc-hx3xxx Firmware Ipc-hx5xxx Ipc-hx5xxx Firmware Sd1a1 Sd1a1 Firmware Sd22 Sd22 Firmware Sd49 Sd49 Firmware Sd50 Sd50 Firmware Sd52c Sd52c Firmware Sd6al Sd6al Firmware Tpc-bf1241 Tpc-bf1241 Firmware Tpc-bf2221 Tpc-bf2221 Firmware Tpc-bf5x01 Tpc-bf5x01 Firmware Tpc-bf5x21 Tpc-bf5x21 Firmware Tpc-pt8x21b Tpc-pt8x21b Firmware Tpc-sd2221 Tpc-sd2221 Firmware Tpc-sd8x21 Tpc-sd8x21 Firmware Vth-542xh Vth-542xh Firmware Vto-65xxx Vto-65xxx Firmware Vto-75x95x Vto-75x95x Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: dahua

Published:

Updated: 2026-01-12T19:53:16.325Z

Reserved: 2021-05-17T00:00:00.000Z

Link: CVE-2021-33044

cve-icon Vulnrichment

Updated: 2024-08-03T23:42:19.261Z

cve-icon NVD

Status : Analyzed

Published: 2021-09-15T22:15:10.497

Modified: 2026-01-13T22:20:28.687

Link: CVE-2021-33044

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses