CVE-2021-4463 (GCVE-0-2021-4463)

Vulnerability from cvelistv5 – Published: 2025-11-12 22:07 – Updated: 2025-11-13 17:05
VLAI?
Title
Longjing Technology BEMS API <= 1.21 Remote Arbitrary File Download
Summary
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.
Severity ?
8.7 (High)
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
CWE
  • CWE-552 - Files or Directories Accessible to External Parties
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
Shenzhen Longjing Technology Co. Ltd. BEMS API Affected: 0 , ≤ 1.21 (semver)
Create a notification for this product.
Credits
Gjoko Krstic of Zero Science Lab
Show details on NVD website
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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