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

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.

8.8 HIGHEPSS 36.21%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 03:22 UTC

OverviewCVSS details

8.8HIGHCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Apr 8, 2020
Assigner: tenable

Affected

Amcrest

Versions: before 2.623.00AC004.0.R.200316, 2.420.AC00.18.R.20200217, 2.800.00AC000.0.R.200330, 2.800.0000000.6.R.200314.bin, 2.622.00AC000.0.R.200320.bin, and 4.000.00AC000.0.R.200218

Exploitation

Public exploit: Yes · 1 reference
CISA KEV: Listed · Nov 3, 2021
KEV due date: May 3, 2022
Ransomware use: Unknown
SSVC: Exploitation active · Automatable no · Impact total

EPSS · FIRST, scored Nov 8

36.21%chance of exploitation in 30 days

Higher than 98.48% of CVEs

CVSS 3.1 · NVD

8.8High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

8.0High

AV:N/AC:L/Au:S/C:P/I:P/A:C

Attack vector: Network
Attack complexity: Low
Authentication: Single
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Complete

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
8.8	HIGH	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.0	HIGH	2.0NVD	AV:N/AC:L/Au:S/C:P/I:P/A:C

CISA required action

⚡ Known exploited · remediation due May 3, 2022

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Details

CVE ID: CVE-2020-5735
Status: Analyzed
Assigner (CNA): tenable
Published: Apr 8, 2020
Last modified: 2026-06-17 03:22 UTC
Weaknesses: CWE-121
CWE-787

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 10:12 UTC.