CVE-2020-5735

HIGHNVD 8.89.0▲Trending — 4 sources updated this weekExploited in the wild

8.8

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.

CVSS v3: 8.8
EG Score: 9.0(high)
EPSS: 97.8%
KEV: ⚠ Exploited

Published

April 8, 2020

Last Modified

October 31, 2025

Advisory Details (3)

Auto-updated Jun 2, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5735

generic🟡 PoC Available

Amcrest Camera/NVR Multiple Vulnerabilities - Research Advisory | Tenable®

https://www.tenable.com/security/research/tra-2020-20

generic

Packet Storm

http://packetstormsecurity.com/files/157164/Amcrest-Dahua-NVR-Camera-IP2M-841-Denial-Of-Service.html

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-03 23:04 UTCEG score recompute
2026-06-03 23:04 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 18:54 UTCEG score recompute
2026-06-03 18:54 UTCGHSA enrichment
2026-06-03 14:44 UTCEG score recompute
2026-06-03 14:44 UTCGHSA enrichment
2026-06-03 10:34 UTCEG score recompute
2026-06-03 10:34 UTCGHSA enrichment
2026-06-03 06:23 UTCEG score recompute
2026-06-03 06:23 UTCGHSA enrichment
2026-06-03 02:13 UTCEG score recompute
2026-06-03 02:13 UTCGHSA enrichment
2026-06-02 22:03 UTCEG score recompute
2026-06-02 22:03 UTCGHSA enrichment
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 18:32 UTCkev_newly_listed
2026-06-02 17:53 UTCEG score recompute
2026-06-02 17:53 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-48304
First seen Apr 8, 2020
Amcrest Dahua NVR Camera IP2M-841 - Denial of Service (PoC)
Open source ↗

Frequently asked(6)

What is CVE-2020-5735?

CVE-2020-5735 is a high vulnerability published on April 8, 2020. 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.

When was CVE-2020-5735 disclosed?

CVE-2020-5735 was first published in the National Vulnerability Database on April 8, 2020, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-5735 actively exploited?

Yes. CISA added CVE-2020-5735 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Amcrest Cameras and Network Video Recorder (NVR). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-5735?

CVE-2020-5735 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2020-5735?

CVE-2020-5735 affects Amcrest Cameras and Network Video Recorder (NVR). The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-5735?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-5735, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-5735

Explore →

Is Your Infrastructure Affected by CVE-2020-5735?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2020-5735

📅 Published

🔄 Last Modified

📋 Advisory Details (3)