CVE-2021-33044: Dahua IP Camera Authentication Bypass Vulnerability
Published Sep 15, 2021
·Updated
Dahua IP cameras and related products contain an authentication bypass vulnerability when the NetKeyboard type argument is specified by the client during authentication.
Other sources
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 Software
77 affected components
Dahua IP Camera Firmware
Dahuasecurity Ipc-hum7xxx Firmware<2.820.0000000.5.r.210705
Dahuasecurity Ipc-hum7xxx
Dahuasecurity Ipc-hx3xxx Firmware<2.800.0000000.29.r.210630
Dahuasecurity Ipc-hx3xxx
Dahuasecurity Ipc-hx5xxx Firmware<2.820.0000000.18.r.210705
Dahuasecurity Ipc-hx5xxx
Dahuasecurity Sd1a1 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd1a1
Dahuasecurity Sd22 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd22
Dahuasecurity Sd41 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd41
Dahuasecurity Sd50 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd50
Dahuasecurity Sd52c Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd52c
Dahuasecurity Sd6al Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd6al
Dahuasecurity Tpc-bf1241 Firmware<2.630.0000000.6.r.210707
Dahuasecurity Tpc-bf1241
Dahuasecurity Tpc-bf2221 Firmware<2.630.0000000.10.r.210707
Dahuasecurity Tpc-bf2221
Dahuasecurity Tpc-bf5x01 Firmware<2.630.0000000.12.r.210707
Dahuasecurity Tpc-bf5x01
Dahuasecurity Tpc-pt8x21b Firmware<2.630.0000000.10.r.210701
Dahuasecurity Tpc-pt8x21b
Dahuasecurity Tpc-sd2221 Firmware<=2.630.0000000.7.r.210707
Dahuasecurity Tpc-sd2221
Dahuasecurity Tpc-sd8x21 Firmware<2.630.0000000.9.r.210706
Dahuasecurity Tpc-sd8x21
Dahuasecurity Vto-65xxx Firmware<4.300.0000004.0.r.210715
Dahuasecurity Vto-65xxx
Dahuasecurity Vto-75x95x Firmware<4.300.0000003.0.r.210714
Dahuasecurity Vto-75x95x
Dahuasecurity Vth-542xh Firmware<4.500.0000002.0.r.210715
Dahuasecurity Vth-542xh
Dahuasecurity Tpc-bf5x21 Firmware<2.630.0000000.8.r.210630
Dahuasecurity Tpc-bf5x21
All of the following
Dahuasecurity Ipc-hum7xxx Firmware<2.820.0000000.5.r.210705
Dahuasecurity Ipc-hum7xxx
All of the following
Dahuasecurity Ipc-hx3xxx Firmware<2.800.0000000.29.r.210630
Dahuasecurity Ipc-hx3xxx
All of the following
Dahuasecurity Ipc-hx5xxx Firmware<2.820.0000000.18.r.210705
Dahuasecurity Ipc-hx5xxx
All of the following
Dahuasecurity Sd1a1 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd1a1
All of the following
Dahuasecurity Sd22 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd22
All of the following
Dahuasecurity Sd49 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd49
All of the following
Dahuasecurity Sd50 Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd50
All of the following
Dahuasecurity Sd52c Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd52c
All of the following
Dahuasecurity Sd6al Firmware<2.812.0000007.0.r.210706
Dahuasecurity Sd6al
All of the following
Dahuasecurity Tpc-bf1241 Firmware<2.630.0000000.6.r.210707
Dahuasecurity Tpc-bf1241
All of the following
Dahuasecurity Tpc-bf2221 Firmware<2.630.0000000.10.r.210707
Dahuasecurity Tpc-bf2221
All of the following
Dahuasecurity Tpc-bf5x01 Firmware<2.630.0000000.12.r.210707
Dahuasecurity Tpc-bf5x01
All of the following
Dahuasecurity Tpc-pt8x21b Firmware<2.630.0000000.10.r.210701
Dahuasecurity Tpc-pt8x21b
All of the following
Dahuasecurity Tpc-sd2221 Firmware<=2.630.0000000.7.r.210707
Dahuasecurity Tpc-sd2221
All of the following
Dahuasecurity Tpc-sd8x21 Firmware<2.630.0000000.9.r.210706
Dahuasecurity Tpc-sd8x21
All of the following
Dahuasecurity Vto-65xxx Firmware<4.300.0000004.0.r.210715
Dahuasecurity Vto-65xxx
All of the following
Dahuasecurity Vto-75x95x Firmware<4.300.0000003.0.r.210714
Dahuasecurity Vto-75x95x
All of the following
Dahuasecurity Vth-542xh Firmware<4.500.0000002.0.r.210715
Dahuasecurity Vth-542xh
All of the following
Dahuasecurity Tpc-bf5x21 Firmware<2.630.0000000.8.r.210630
Dahuasecurity Tpc-bf5x21
Event History
Sep 15, 2021
CVE Published
via MITRE·09:36 PM
Data Sourced
via MITRE·09:36 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software
Aug 21, 2024
Known Exploited
via CISA·12:00 AM
Sep 5, 2024
News Published
via The Register·07:44 PM
News Published
via The Register·07:47 PM
Dec 16, 2024
News Published
via BleepingComputer·10:22 PM
News Published
via BleepingComputer·10:24 PM
Nov 3, 58437
Event
04:14 AM
Frequently Asked Questions
1
What is CVE-2021-33044?
CVE-2021-33044 is an identity authentication bypass vulnerability found in some Dahua products during the login process.
2
How severe is CVE-2021-33044?
CVE-2021-33044 has a severity rating of 9.8 (critical).
3
Which Dahua products are affected by CVE-2021-33044?
Dahua products with the following firmware versions are affected: IPC-HUM7xxx, IPC-HX3xxx, IPC-HX5xxx, SD1a1, SD22, SD41, SD50, SD52c, SD6al, TPC-BF1241, TPC-BF2221, TPC-BF5x01, TPC-PT8x21b, TPC-SD2221, TPC-SD8x21, VTO-65xxx, VTO-75x95x, VTH-542xh, and TPC-BF5x21.
4
How can attackers exploit CVE-2021-33044?
Attackers can exploit CVE-2021-33044 by bypassing device identity authentication using malicious data packets.
5
Where can I find more information about CVE-2021-33044?
More information about CVE-2021-33044 can be found at the following references: [link1], [link2], [link3].