CVE-2020-5735
Amcrest Cameras and NVR Stack-based Buffer Overflow Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 36.22% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · first 8 April 2020
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022
- Weakness
- CWE-121, CWE-787
- Affected
- amcrest/1080-lite 8ch firmware · amcrest/amdv10814-h5 firmware · amcrest/ipm-721 firmware · amcrest/ip2m-841 firmware · amcrest/ip2m-841-v3 firmware · amcrest/ip2m-853ew firmware · amcrest/ip2m-858w firmware · amcrest/ip2m-866w firmware · amcrest/ip2m-866ew firmware · amcrest/ip4m-1053ew firmware · amcrest/ip8m-2454ew firmware · amcrest/ip8m-2493eb firmware · amcrest/ip8m-2496eb firmware · amcrest/ip8m-2597e firmware · amcrest/ip8m-mb2546ew firmware · amcrest/ip8m-mt2544ew firmware · amcrest/ip8m-t2499ew firmware · amcrest/ipm-hx1 firmware
- Source
- vulnreport@tenable.com
EPSS 36.2% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2020-5735
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/157164/Amcrest-Dahua-NVR-Camera-IP2M-841-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- https://www.tenable.com/security/research/tra-2020-20Third Party Advisory
- http://packetstormsecurity.com/files/157164/Amcrest-Dahua-NVR-Camera-IP2M-841-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- https://www.tenable.com/security/research/tra-2020-20Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5735US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.