CVE-2021-33044
Published: August 21, 2024
Official Description
Dahua IP cameras and related products contain an authentication bypass vulnerability when the NetKeyboard type argument is specified by the client during authentication.
CISA KEV Advisory
Dahua IP Camera Authentication Bypass Vulnerability
Dahua IP cameras and related products contain an authentication bypass vulnerability when the NetKeyboard type argument is specified by the client during authentication.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Risk Analysis
This authentication bypass vulnerability affects Dahua IP cameras and related products, occurring when the NetKeyboard type argument is specified during client authentication. The high EPSS score of 0.94269 and its presence in the KEV catalog indicate a very high likelihood of exploitation and critical urgency.
Active exploitation of this vulnerability has been observed in the wild, and it is confirmed to be exploited by CISA, indicating a severe and immediate threat. This vulnerability is remotely exploitable.
Apply available firmware updates for Dahua IP cameras and related products to address this authentication bypass. Implement strong network segmentation and restrict access to camera interfaces.
Technical Analysis
CVE-2021-33044 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-33044 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-33044 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1