How to fix CVE-2024-39787?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Review file handling controls and restrict upload directories.

Is Wl Wn533A8 Firmware affected by CVE-2024-39787?

CVE-2024-39787 presents critical security risk, a path traversal vulnerability rated CVSS 9.1. This could allow attackers to access or modify files outside intended directories, potentially exposing sensitive configuration or credentials.

CVE-2024-39787

CRITICAL

2025-01-14 [email protected]

9.1

CVSS 3.1

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:03 vuln.today

PoC Detected

Nov 03, 2025 - 22:17 vuln.today

Public exploit code

CVE Published

Jan 14, 2025 - 15:15 nvd

CRITICAL 9.1

Description

Multiple directory traversal vulnerabilities exist in the nas.cgi add_dir() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A directory traversal vulnerability exists within the `disk_part` POST parameter.

Analysis

Multiple directory traversal vulnerabilities exist in the nas.cgi add_dir() functionality of Wavlink AC3000 M33A8.V5030.210505. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. Multiple directory traversal vulnerabilities exist in the nas.cgi add_dir() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A directory traversal vulnerability exists within the `disk_part` POST parameter. Affected products include: Wavlink Wl-Wn533A8 Firmware.

Affected Products

Wavlink Wl-Wn533A8 Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.2

CVSS: +46

POC: +20

CVE-2024-39787 vulnerability details – vuln.today

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CVE-2024-39787

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CVE-2024-39787

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