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CVE-2024-39769VulnerabilityPublished Updated

CVE-2024-39769: Wavlink AC3000 · Classic Buffer Overflow

Affects Wavlink AC3000Source CVE Database V5

0

Not known to be exploited · CVSS 9.1 Critical.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 59% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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. Weaponised: 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 26 Oct 2026.

What to do

AI-suggested

1. Immediately inventory all Wavlink AC3000 devices running the affected firmware version M33A8.V5030.210505 within the network. 2. Restrict administrative access to these devices to trusted management networks and use strong authentication mechanisms to reduce the risk of credential compromise. 3. Disable remote HTTP management interfaces or restrict them via firewall rules to prevent unauthorized access. 4. Monitor network traffic and device logs for unusual or unauthorized HTTP POST requests targeting internet.cgi endpoints. 5. Implement network segmentation to isolate vulnerable devices from critical assets. 6. Engage with Wavlink support or vendor channels to obtain firmware updates or patches as soon as they become available. 7. Consider deploying intrusion detection/prevention systems (IDS/IPS) with signatures targeting exploitation attempts of this vulnerability. 8. Educate network administrators about the risk and ensure strict password policies and multi-factor authentication are enforced. 9. If patching is delayed, consider temporary device replacement or alternative hardware for critical network segments.

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.

References

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