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VulnerabilityPublished Updated

CVE-2024-39802: Multiple Buffer Overflow Vulnerabilities Exist

Source GCVE Database

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Authoritative record:CVE-2024-39802· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical.

Data as of 30 Oct 2026, 16:03 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (talos)CVSS 3.19.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Jan 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

AI-suggested

Users should monitor Wavlink advisories for updates and avoid exposing the device to untrusted networks. Since exploitation requires authentication, restricting access to the management interface can reduce risk.

Description

Multiple buffer overflow vulnerabilities have been identified in the qos.cgi qos_settings() functionality of the Wavlink AC3000 M33A8.V5030.210505 router firmware. These vulnerabilities can be triggered by an authenticated attacker sending a specially crafted HTTP POST request with the qos_dat parameter, leading to a stack-based buffer overflow. The vulnerabilities have a high severity with a CVSS score of 9.1, indicating critical impact on confidentiality, integrity, and availability.

References

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