Auth bypass in Dahuasecurity Ipc-hum7xxx
CVE-2021-33044
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.
Vulnerability class: Broken Authentication
EPSS: 0.999 (100.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- cybersecurity@dahuatech.com (x_refsource_MISC, Vendor Advisory)
- cybersecurity@dahuatech.com (mailing-list, Exploit, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
- cybersecurity@dahuatech.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2021-33044?
- CVE-2021-33044 is a critical-severity vulnerability in Dahuasecurity Ipc-hum7xxx, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-09-15.
- How severe is CVE-2021-33044?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-33044 known to be exploited?
- Yes. CVE-2021-33044 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-08-21), indicating it is being actively exploited. 55 public proof-of-concept repositories are indexed.