CVE-2021-33550
Published: April 11, 2026
Official Description
Multiple camera devices by UDP Technology, Geutebrück and other vendors are vulnerable to command injection, which may allow an attacker to remotely execute arbitrary code.
Risk Analysis
Multiple camera devices from vendors like UDP Technology and Geutebrück are vulnerable to command injection, enabling remote arbitrary code execution. This vulnerability is listed in CISA's KEV catalog, indicating it is actively exploited and requires immediate attention.
Active exploitation of this vulnerability has been observed in the wild. Attackers can remotely execute arbitrary code on affected camera devices.
Update the firmware of all affected camera devices from vendors such as UDP Technology and Geutebrück. Consider isolating these devices from external networks and implementing strict access controls.
Technical Analysis
CVE-2021-33550 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-2021-33550 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
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-33550 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