CRITICALCVSS v3.1 9.8Actively exploited · CISA KEV since 2024-08-21Vulnerability

CVE-2021-33045

Dahua IP cameras and related products contain an authentication bypass vulnerability when the loopback device is specified by the client during authentication.

Properties

Euvd product
Some Dahua IP Camera, Video Intercom, NVR, XVR devices
Vulnerability name
Dahua IP Camera Authentication Bypass Vulnerability
First seen
2026-01-12T19:53:51+00:00
Cvss score
9.8
Epss score
0.99593
Last seen
2026-10-19T12:00:27+00:00
Due date
2024-09-11
Euvd assigner
dahua
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2024-08-21T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2024-08-21
Score
9.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Related Entities (40 · showing 23)

AFFECTS_PRODUCT (37 · showing 20)

→[Product]cpe:2.3:h:dahuasecurity:xvr-7x32:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:xvr-4x04_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:xvr-5x04:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:xvr-7x16:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:xvr-5x16:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:xvr-5x16_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:xvr-7x32_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:xvr-4x08:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:xvr-5x08:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:xvr-5x08_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:xvr-7x16_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:xvr-5x04_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:nvr-5xxx:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:vto-65xxx_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:nvr-2xxx:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:dahuasecurity:ipc-hx5xxx:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:nvr-6xx_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:xvr-4x08_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:nvr-2xxx_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:dahuasecurity:nvr-5xxx_firmware:*:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Dahua IP Camera Authentication Bypass Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Improper Authentication

INVOLVES (1)

←[Signal]kev_added · 2024-08-21

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CVE-2021-33045 (CVSS v3.1 9.8) — Ninja Signal Threat Intelligence | Ninja Signal