CVE intelligence and bounded remediation

CVE-2023-32621 — Wavlink Wl-Wn531Ax2 Firmware security vulnerability

High CVSS 7.2

WL-WN531AX2 firmware versions prior to 2023526 allows an attacker with an administrative privilege to upload arbitrary files and execute OS commands with the root privilege.

Severity
High
CVSS
7.2 (3.1)
Published
2023-06-30
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-434

Affected products

  • wavlink / wl-wn531ax2_firmware

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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