AEGLIX vulnerability intelligence
CVE-2021-33044
CRITICAL · CVSS 9.8 · Analyzed
Published: 2021-09-15 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-287
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Dahua · IP Camera Firmware
- Added to catalog
- 2024-08-21
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA remediation due date
- 2024-09-11
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:o:dahuasecurity:ipc-hum7xxx_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.820.0000000.5.r.210705
cpe:2.3:o:dahuasecurity:ipc-hx3xxx_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.800.0000000.29.r.210630
cpe:2.3:o:dahuasecurity:ipc-hx5xxx_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.820.0000000.18.r.210705
cpe:2.3:o:dahuasecurity:sd1a1_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.812.0000007.0.r.210706
cpe:2.3:o:dahuasecurity:sd22_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.812.0000007.0.r.210706
cpe:2.3:o:dahuasecurity:sd49_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.812.0000007.0.r.210706
cpe:2.3:o:dahuasecurity:sd50_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.812.0000007.0.r.210706
cpe:2.3:o:dahuasecurity:sd52c_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.812.0000007.0.r.210706
cpe:2.3:o:dahuasecurity:sd6al_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.812.0000007.0.r.210706
cpe:2.3:o:dahuasecurity:tpc-bf1241_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.630.0000000.6.r.210707
cpe:2.3:o:dahuasecurity:tpc-bf2221_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.630.0000000.10.r.210707
cpe:2.3:o:dahuasecurity:tpc-bf5x01_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.630.0000000.12.r.210707
cpe:2.3:o:dahuasecurity:tpc-pt8x21b_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.630.0000000.10.r.210701
cpe:2.3:o:dahuasecurity:tpc-sd2221_firmware:*:*:*:*:*:*:*:*
Through (inclusive): 2.630.0000000.7.r.210707
cpe:2.3:o:dahuasecurity:tpc-sd8x21_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.630.0000000.9.r.210706
cpe:2.3:o:dahuasecurity:vto-65xxx_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 4.300.0000004.0.r.210715
cpe:2.3:o:dahuasecurity:vto-75x95x_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 4.300.0000003.0.r.210714
cpe:2.3:o:dahuasecurity:vth-542xh_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 4.500.0000002.0.r.210715
cpe:2.3:o:dahuasecurity:tpc-bf5x21_firmware:*:*:*:*:*:*:*:*
Before (exclusive): 2.630.0000000.8.r.210630
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html
Exploit · Third Party Advisory · VDB Entry
- http://seclists.org/fulldisclosure/2021/Oct/13
Exploit · Mailing List · Third Party Advisory
- https://www.dahuasecurity.com/support/cybersecurity/details/957
Vendor Advisory
- http://packetstormsecurity.com/files/164423/Dahua-Authentication-Bypass.html
Exploit · Third Party Advisory · VDB Entry
- http://seclists.org/fulldisclosure/2021/Oct/13
Exploit · Mailing List · Third Party Advisory
- https://www.dahuasecurity.com/support/cybersecurity/details/957
Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33044
US Government Resource