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CVE-2024-39790VulnerabilityPublished Updated

CVE-2024-39790: 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, 06:26 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
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: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 2026-10-26.

What to do

AI-suggested

1. Immediately restrict administrative access to the Wavlink AC3000 router management interface by limiting it to trusted IP addresses and using VPNs for remote access. 2. Enforce strong authentication mechanisms and rotate credentials regularly to reduce the risk of credential compromise. 3. Monitor router logs and network traffic for unusual FTP configuration changes or unauthorized HTTP requests to the nas.cgi endpoint. 4. Disable FTP services if not required or limit FTP session parameters manually to safe values. 5. Segment networks to isolate critical infrastructure from devices running vulnerable firmware. 6. Engage with Wavlink support channels to obtain firmware updates or patches as soon as they become available. 7. Consider deploying network-based intrusion detection/prevention systems (IDS/IPS) with signatures targeting exploitation attempts of this vulnerability. 8. Conduct regular security assessments and penetration tests focusing on router configurations and access controls. 9. 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.

References

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