Cyber Resilience

CVE-2024-39763

CriticalPublic PoCRCE

Published: 14 January 2025

Published
14 January 2025
Modified
03 November 2025
KEV Added
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Patch
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CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0028 52.0th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-39763 is a critical-severity Command Injection (CWE-77) vulnerability in Wavlink Wl-Wn533A8 Firmware. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 48.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2024-39763 consists of multiple OS command injection vulnerabilities (CWE-77) in the internet.cgi set_add_routing() functionality of the Wavlink AC3000 router running firmware version M33A8.V5030.210505. A specially crafted HTTP request targeting the `gateway` POST parameter can lead to arbitrary command execution on the device.

These vulnerabilities carry 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). An authenticated attacker with high privileges can exploit them remotely over the network with low complexity by sending a malicious HTTP request, resulting in full arbitrary OS command execution and high-impact compromise of confidentiality, integrity, and availability across an expanded scope.

Mitigation details are available in the Talos Intelligence advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2020.

EU & UK References

Vulnerability details

Multiple OS command injection vulnerabilities exist in the internet.cgi set_add_routing() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to arbitrary command execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A command injection…

more

vulnerability exists in the `gateway` POST parameter.

CWE(s)
CWE-77

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

OS command injection in public-facing router web interface (internet.cgi) directly enables remote exploitation via crafted HTTP requests (T1190) and arbitrary Unix shell command execution (T1059.004).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2024-39783Same product: Wavlink Wl-Wn533A8
CVE-2024-39781Same product: Wavlink Wl-Wn533A8
CVE-2024-39367Same product: Wavlink Wl-Wn533A8
CVE-2024-39782Same product: Wavlink Wl-Wn533A8
CVE-2024-39765Same product: Wavlink Wl-Wn533A8
CVE-2024-39764Same product: Wavlink Wl-Wn533A8
CVE-2024-39760Same product: Wavlink Wl-Wn533A8
CVE-2024-37186Same product: Wavlink Wl-Wn533A8
CVE-2024-39761Same product: Wavlink Wl-Wn533A8
CVE-2024-34166Same product: Wavlink Wl-Wn533A8

Affected Assets

wavlink
wl-wn533a8 firmware
m33a8.v5030.210505

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly prevents OS command injection by validating the 'gateway' POST parameter in internet.cgi set_add_routing() to reject malicious payloads.

SI-2 Flaw Remediation good match
prevent

Remediates the specific command injection flaw in Wavlink AC3000 firmware via timely patching and updates.

AC-6 Least Privilege partial match
prevent

Enforces least privilege to limit high-privilege access required for exploitation, reducing the attack surface for authenticated users.

References