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VulnerabilityPublished Updated

CVE-2024-39800: Wavlink AC3000 · External Control of System or Configuration Setting

Affects Wavlink AC3000Source CVE Database V5

0

Not known to be exploited · CVSS 9.1 Critical.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.9% chance of exploitation in 30 days – higher than 79% 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 identify and inventory all Wavlink AC3000 devices running the affected firmware version M33A8.V5030.210505 within the organization.
  2. Restrict administrative access to the router’s web interface to trusted networks and use strong, unique credentials to prevent unauthorized authentication.
  3. Disable the OpenVPN server functionality if not required, reducing the attack surface.
  4. Monitor network traffic and router logs for unusual POST requests targeting openvpn.cgi or unexpected configuration changes.
  5. Implement network segmentation to isolate critical systems from devices running vulnerable firmware.
  6. Regularly check for firmware updates or security advisories from Wavlink and apply patches as soon as they become available.
  7. Consider deploying Web Application Firewalls (WAF) or Intrusion Detection/Prevention Systems (IDS/IPS) with signatures to detect and block exploitation attempts.
  8. Educate network administrators on the risks of this vulnerability and enforce strict credential management policies.
  9. If patching is delayed, consider temporary mitigations such as disabling remote management or VPN server features until a fix is applied.

Description

Multiple external config control vulnerabilities exists in the openvpn.cgi openvpn_server_setup() 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 configuration injection vulnerability exists in the `open_port` POST parameter.

References

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