Cyber Posture

CVE-2024-39769

CriticalPublic PoC

Published: 14 January 2025

Published
14 January 2025
Modified
03 November 2025
KEV Added
Patch
CVSS Score 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0049 65.7th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Description

Multiple buffer overflow vulnerabilities exist in the internet.cgi set_qos() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to stack-based buffer overflow. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.This vulnerability exists in the `cli_mac` POST parameter.

Security Summary

CVE-2024-39769 consists of multiple stack-based buffer overflow vulnerabilities in the internet.cgi set_qos() functionality of the Wavlink AC3000 firmware version M33A8.V5030.210505. These issues, classified under CWE-120, are triggered by a specially crafted HTTP request targeting the `cli_mac` POST parameter. The vulnerability received a CVSS v3.1 base score of 9.1 (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H) upon publication on 2025-01-14.

An authenticated attacker with high privileges (PR:H) can exploit these vulnerabilities remotely over the network (AV:N) with low attack complexity and no user interaction. By sending a malicious HTTP POST request, the attacker triggers the buffer overflow, potentially achieving high impacts on confidentiality, integrity, and availability across the affected scope (S:C), such as arbitrary code execution or system crashes.

Mitigation guidance and additional technical details are available in the Talos Intelligence advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2022.

Details

CWE(s)
CWE-120

Affected Products

wavlink
wl-wn533a8 firmware
m33a8.v5030.210505

References