Actively exploited in the wild
Amcrest Cameras and NVR Stack-based Buffer Overflow Vulnerability
Amcrest - Cameras and Network Video Recorder (NVR) · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2020-5735
HighCVSS 8.8KEVSummary
Amcrest cameras and NVR are vulnerable to a stack-based buffer overflow over port 37777. An authenticated remote attacker can abuse this issue to crash the device and possibly execute arbitrary code.
Risk Assessment
The vulnerability may allow device crashes or arbitrary code execution, potentially leading to loss of surveillance availability and device compromise.
Recommendation
Update Amcrest camera and NVR firmware to the latest version and restrict access to port 37777 to trusted networks.
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Original NVD description (English source)
Amcrest cameras and NVR are vulnerable to a stack-based buffer overflow over port 37777. An authenticated remote attacker can abuse this issue to crash the device and possibly execute arbitrary code.