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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-4463 Detail

Description

Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint. The 'fileName' parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 8.7 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://cxsecurity.com/issue/WLB-2021070173 VulnCheck
https://exchange.xforce.ibmcloud.com/vulnerabilities/206477 VulnCheck
https://packetstormsecurity.com/files/163702 VulnCheck
https://web.archive.org/web/20220527162453/http://www.ljkj2012.com/ VulnCheck
https://www.exploit-db.com/exploits/50163 VulnCheck
https://www.vulncheck.com/advisories/longjing-technology-bems-api-remote-arbitrary-file-download VulnCheck
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5657.php VulnCheck

Weakness Enumeration

CWE-ID CWE Name Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') VulnCheck  
CWE-552 Files or Directories Accessible to External Parties VulnCheck  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-4463
NVD Published Date:
11/12/2025
NVD Last Modified:
11/12/2025
Source:
VulnCheck