CVE-2021-33044
Summary
| CVE | CVE-2021-33044 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-09-15 22:15:00 UTC |
| Updated | 2021-12-02 13:50:00 UTC |
| 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. |
Risk And Classification
EPSS: 0.942460000 probability, percentile 0.999280000 (date 2026-04-02)
CISA KEV: Listed on 2024-08-21; due 2024-09-11; ransomware use Unknown
Problem Types: CWE-287
CISA Known Exploited Vulnerability
| Vendor | Dahua |
|---|---|
| Product | IP Camera Firmware |
| Name | Dahua IP Camera Authentication Bypass Vulnerability |
| 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 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Hardware | Dahuasecurity | Ipc-hum7xxx | - | All | All | All |
| Operating System | Dahuasecurity | Ipc-hum7xxx Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Ipc-hx3xxx | - | All | All | All |
| Operating System | Dahuasecurity | Ipc-hx3xxx Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Ipc-hx5xxx | - | All | All | All |
| Operating System | Dahuasecurity | Ipc-hx5xxx Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Sd1a1 | - | All | All | All |
| Operating System | Dahuasecurity | Sd1a1 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Sd22 | - | All | All | All |
| Operating System | Dahuasecurity | Sd22 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Sd41 | - | All | All | All |
| Operating System | Dahuasecurity | Sd41 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Sd50 | - | All | All | All |
| Operating System | Dahuasecurity | Sd50 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Sd52c | - | All | All | All |
| Operating System | Dahuasecurity | Sd52c Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Sd6al | - | All | All | All |
| Operating System | Dahuasecurity | Sd6al Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Tpc-bf1241 | - | All | All | All |
| Operating System | Dahuasecurity | Tpc-bf1241 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Tpc-bf2221 | - | All | All | All |
| Operating System | Dahuasecurity | Tpc-bf2221 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Tpc-bf5x01 | - | All | All | All |
| Operating System | Dahuasecurity | Tpc-bf5x01 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Tpc-bf5x21 | - | All | All | All |
| Operating System | Dahuasecurity | Tpc-bf5x21 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Tpc-pt8x21b | - | All | All | All |
| Operating System | Dahuasecurity | Tpc-pt8x21b Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Tpc-sd2221 | - | All | All | All |
| Operating System | Dahuasecurity | Tpc-sd2221 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Tpc-sd8x21 | - | All | All | All |
| Operating System | Dahuasecurity | Tpc-sd8x21 Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Vth-542xh | - | All | All | All |
| Operating System | Dahuasecurity | Vth-542xh Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Vto-65xxx | - | All | All | All |
| Operating System | Dahuasecurity | Vto-65xxx Firmware | All | All | All | All |
| Hardware | Dahuasecurity | Vto-75x95x | - | All | All | All |
| Operating System | Dahuasecurity | Vto-75x95x Firmware | All | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Dahua Authentication Bypass ≈ Packet Storm | MISC | packetstormsecurity.com | |
| Full Disclosure: [Update]: Dahua Authentication bypass (CVE-2021-33044, CVE-2021-33045) | FULLDISC | seclists.org | |
| Security Advisory - Identity authentication bypass vulnerability found in some Dahua products | MISC | www.dahuasecurity.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.