CVE-2024-39765
Published: 14 January 2025
Summary
CVE-2024-39765 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-2024-39765 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. A command injection vulnerability also exists in the custom_interface POST parameter. These issues allow a specially crafted HTTP request to trigger arbitrary command execution on the device. The vulnerability 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) and was published on 2025-01-14.
An authenticated attacker with high privileges (PR:H) can exploit these vulnerabilities over the network with low complexity and no user interaction required. By sending a malicious HTTP request to the affected endpoints, the attacker achieves arbitrary OS command execution, potentially compromising confidentiality, integrity, and availability across the device's scope with high impact.
Mitigation details are available in the Cisco Talos Intelligence Group advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2020.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38359
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 `custom_interface` POST parameter.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection in public-facing router web CGI (internet.cgi) directly enables remote exploitation of the device (T1190) leading to 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 by requiring validation and sanitization of untrusted inputs like the custom_interface POST parameter and set_add_routing() HTTP requests.
Remediates the specific command injection flaws in the Wavlink router's internet.cgi functionality through timely firmware patching and updates.
Limits the scope and impact of arbitrary command execution by ensuring high-privilege accounts required for exploitation (PR:H) adhere to least privilege principles.