CVE intelligence and bounded remediation

CVE-2021-35962 — Specific page parameters in Dr

High CVSS 7.5

Specific page parameters in Dr. ID Door Access Control and Personnel Attendance Management system does not filter special characters. Remote attackers can apply Path Traversal means to download credential files from the system without permission.

Severity
High
CVSS
7.5 (3.1)
Published
2021-07-16
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-22

Affected products

  • secom / door_access_control
  • secom / personnel_attendance_system

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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