CVEvulnerability

CVE-2021-33044

9.8 CRITICAL Known exploited Published 2021-09-15 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Dahua IP Camera Authentication Bypass Vulnerability — Dahua IP Camera Firmware

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

Added to KEV
2024-08-21
Remediation due
2024-09-11
Ransomware use
Unknown
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://www.dahuasecurity.com/aboutUs/trustedCenter/details/582; https://nvd.nist.gov/vuln/detail/CVE-2021-33044
Status
Analyzed
Published
2021-09-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-287

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.

Affected configurations

• dahuasecurity ipc-hum7xxx firmware (< 2.820.0000000.5.r.210705) • dahuasecurity ipc-hx3xxx firmware (< 2.800.0000000.29.r.210630) • dahuasecurity ipc-hx5xxx firmware (< 2.820.0000000.18.r.210705) • dahuasecurity sd1a1 firmware (< 2.812.0000007.0.r.210706) • dahuasecurity sd22 firmware (< 2.812.0000007.0.r.210706) • dahuasecurity sd49 firmware (< 2.812.0000007.0.r.210706) • dahuasecurity sd50 firmware (< 2.812.0000007.0.r.210706) • dahuasecurity sd52c firmware (< 2.812.0000007.0.r.210706) • dahuasecurity sd6al firmware (< 2.812.0000007.0.r.210706) • dahuasecurity tpc-bf1241 firmware (< 2.630.0000000.6.r.210707) • dahuasecurity tpc-bf2221 firmware (< 2.630.0000000.10.r.210707) • dahuasecurity tpc-bf5x01 firmware (< 2.630.0000000.12.r.210707) • dahuasecurity tpc-pt8x21b firmware (< 2.630.0000000.10.r.210701) • dahuasecurity tpc-sd2221 firmware (<= 2.630.0000000.7.r.210707) • dahuasecurity tpc-sd8x21 firmware (< 2.630.0000000.9.r.210706) • dahuasecurity vto-65xxx firmware (< 4.300.0000004.0.r.210715) • dahuasecurity vto-75x95x firmware (< 4.300.0000003.0.r.210714) • dahuasecurity vth-542xh firmware (< 4.500.0000002.0.r.210715) • dahuasecurity tpc-bf5x21 firmware (< 2.630.0000000.8.r.210630)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References