CVE-2024-39764
Published: 14 January 2025
Summary
CVE-2024-39764 is a critical-severity Command Injection (CWE-77) vulnerability in Wavlink Wl-Wn533A8 Firmware. Its CVSS base score is 9.1 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 30.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2024-39764 consists of multiple OS command injection vulnerabilities (CWE-77) in the internet.cgi set_add_routing() functionality of the Wavlink AC3000 router running firmware version M33A8.V5030.210505. These flaws, including a specific command injection issue in the "dest" POST parameter, allow a specially crafted HTTP request to trigger arbitrary command execution on the device. The vulnerability was published on 2025-01-14 and carries a CVSS v3.1 base score of 9.1 (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
An authenticated attacker with high privileges (PR:H) can exploit these vulnerabilities remotely over the network with low complexity and no user interaction required. By sending a malicious HTTP request to the affected endpoint, the attacker achieves arbitrary OS command execution, enabling high confidentiality, integrity, and availability impacts in a changed scope (S:C), such as full device compromise, data exfiltration, or persistent access.
The primary advisory from Talos Intelligence, TALOS-2024-2020, documents these vulnerabilities in detail at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2020. Security practitioners should consult this report for recommended mitigations, as no specific patch details are provided in the core CVE information.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38358
Vulnerability details
Multiple OS command injection vulnerabilities exist in the internet.cgi set_add_routing() 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 command injection…
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vulnerability exists in the `dest` POST parameter.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection in public-facing router web CGI directly enables remote exploitation of the application (T1190) and arbitrary Unix shell command execution (T1059.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents OS command injection vulnerabilities by validating and sanitizing untrusted inputs such as the 'dest' POST parameter in the internet.cgi set_add_routing() function.
Remediates the specific flaws in the Wavlink AC3000 firmware's internet.cgi set_add_routing() functionality through identification, reporting, and correction processes.
Enforces least privilege to restrict the scope of arbitrary command execution even for authenticated high-privilege (PR:H) users exploiting the vulnerability.