CVE intelligence and bounded remediation

CVE-2023-3330 — Nec Aterm Wf300Hp Firmware security vulnerability

Medium CVSS 4.3

Improper Limitation of a Pathname to a Restricted Directory vulnerability in NEC Corporation Aterm WG2600HP2, WG2600HP, WG2200HP, WG1800HP2, WG1800HP, WG1400HP, WG600HP, WG300HP, WF300HP, WR9500N, WR9300N, WR8750N, WR8700N, WR8600N, WR8370N, WR8175N and WR8170N all versions allows a attacker to obtain specific files in the product.

Severity
Medium
CVSS
4.3 (3.1)
Published
2023-06-28
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-22

Affected products

  • nec / aterm_wf300hp_firmware
  • nec / aterm_wg1400hp_firmware
  • nec / aterm_wg1800hp_firmware
  • nec / aterm_wg1800hp2_firmware
  • nec / aterm_wg2200hp_firmware
  • nec / aterm_wg2600hp_firmware

Showing 6 representative product identities from 17 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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