CVE-2024-39790: 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, 14:05 UTC
- EPSS
- 1.5% chance of exploitation in 30 days – higher than 74% 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 restrict administrative access to the Wavlink AC3000 router management interface by limiting it to trusted IP addresses and using VPNs for remote access.
- Enforce strong authentication mechanisms and rotate credentials regularly to reduce the risk of credential compromise.
- Monitor router logs and network traffic for unusual FTP configuration changes or unauthorized HTTP requests to the nas.cgi endpoint.
- Disable FTP services if not required or limit FTP session parameters manually to safe values.
- Segment networks to isolate critical infrastructure from devices running vulnerable firmware.
- Engage with Wavlink support channels to obtain firmware updates or patches as soon as they become available.
- Consider deploying network-based intrusion detection/prevention systems (IDS/IPS) with signatures targeting exploitation attempts of this vulnerability.
- Conduct regular security assessments and penetration tests focusing on router configurations and access controls.
- Educate network administrators about the risks of configuration injection vulnerabilities and the importance of secure router management practices.
Description
Multiple external config control vulnerabilities exist in the nas.cgi set_ftp_cfg() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A configuration injection vulnerability exists within the `ftp_max_sessions` POST parameter.