CVE-2024-39803

Name: CVE-2024-39803
Creator: NVD / NIST
Published: 2025-01-14T15:15:25.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 1.21%

Last modified Jun 17, 2026

CVE-2024-39803 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Multiple buffer overflow vulnerabilities exist in the qos.cgi qos_settings() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to stack-based buffer overflow. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

Multiple buffer overflow vulnerabilities exist in the qos.cgi qos_settings() 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.A buffer overflow vulnerability exists in the `sel_mode` POST parameter.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

1.21%

64.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Wavlink	Wl-Wn533a8 Firmware	m33a8.v5030.210505

References

https://talosintelligence.com/vulnerability_reports/TALOS-2024-2049Exploit, Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2024-2049

Timeline

Published: Jan 14, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-39803?

How severe is CVE-2024-39803?

CVE-2024-39803 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.

How do I fix CVE-2024-39803?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-39803?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST