CVE-2024-39800: Wavlink AC3000 · External Control of System or Configuration Setting
Affects Wavlink AC3000Source CVE Database V5
Not known to be exploited · CVSS 9.1 Critical.
Data as of 26 Oct 2026, 17:16 UTC
- 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:HExploitation evidence
Disclosed: evidence found.
CVE published 14 Jan 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
- Immediately identify and inventory all Wavlink AC3000 devices running the affected firmware version M33A8.V5030.210505 within the organization.
- Restrict administrative access to the router’s web interface to trusted networks and use strong, unique credentials to prevent unauthorized authentication.
- Disable the OpenVPN server functionality if not required, reducing the attack surface.
- Monitor network traffic and router logs for unusual POST requests targeting openvpn.cgi or unexpected configuration changes.
- Implement network segmentation to isolate critical systems from devices running vulnerable firmware.
- Regularly check for firmware updates or security advisories from Wavlink and apply patches as soon as they become available.
- Consider deploying Web Application Firewalls (WAF) or Intrusion Detection/Prevention Systems (IDS/IPS) with signatures to detect and block exploitation attempts.
- Educate network administrators on the risks of this vulnerability and enforce strict credential management policies.
- 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.