What is CVE-2020-5735?

CVE-2020-5735 is a vulnerability in Amcrest, classified under Stack-based Buffer Overflow. Published 2020-04-08.

Is CVE-2020-5735 known to be exploited?

Yes. CVE-2020-5735 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.

Buffer overflow in Amcrest

CVE-2020-5735

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.

Vulnerability class: Buffer Overflow

EPSS: 0.495 (97.9th percentile) — read the EPSS interpretation.

Affected products

N/a 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

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.tenable.com/security/research/tra-2020-20 (x_refsource_MISC)
packetstormsecurity.com/files/157164/Amcrest-Dahua-NVR-Camera-IP2M-841-Denial-O… (x_refsource_MISC)

Frequently asked questions

What is CVE-2020-5735?: CVE-2020-5735 is a vulnerability in Amcrest, classified under Stack-based Buffer Overflow. Published 2020-04-08.
Is CVE-2020-5735 known to be exploited?: Yes. CVE-2020-5735 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.