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CVE-2020-5735: Amcrest Cameras and NVR Stack-based Buffer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2020-5735
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Amcrest cameras and NVR contain a stack-based buffer overflow vulnerability through port 37777 that allows an unauthenticated, remote attacker to crash the device and possibly execute code.

CSIRTS triage

vendor: Amcrestproduct: Cameras and NVRRemote code execution
What
A stack-based buffer overflow vulnerability allows remote code execution.
Who is affected
Amcrest cameras and NVR users are affected.
Urgency
Immediate action is required as the vulnerability is actively exploited and rated critical.
Action
Update to the latest firmware provided by Amcrest.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-5735

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-5735coverage & exploitation statusNVD · CVE.org

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