CVE-2024-39782
Published: 14 January 2025
Summary
CVE-2024-39782 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 30.2% 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
Multiple OS command injection vulnerabilities, classified under CWE-77, affect the adm.cgi sch_reboot() functionality in the Wavlink AC3000 router running firmware version M33A8.V5030.210505. These flaws, tracked as CVE-2024-39782 and published on 2025-01-14, allow arbitrary code execution through a specially crafted HTTP request. One specific instance involves the `restart_min` POST parameter, enabling attackers to inject malicious commands into the system's execution flow.
Exploitation requires an authenticated attacker with high privileges (PR:H), who can send a malicious HTTP request over the network (AV:N) with low complexity (AC:L) and no user interaction (UI:N). Successful exploitation grants scope-changed (S:C) access, resulting in high confidentiality, integrity, and availability impacts (C:H/I:H/A:H), as scored at CVSS 9.1. This enables full arbitrary code execution on the device.
Talos Intelligence documented these issues in vulnerability report TALOS-2024-2033, available at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2033. Security practitioners should consult this advisory for detailed technical analysis and any recommended mitigations or patches.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38361
Vulnerability details
Multiple OS command injection vulnerabilities exist in the adm.cgi sch_reboot() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to a arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A command…
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injection vulnerability exists in the `restart_min` POST parameter.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection in public-facing router web interface (adm.cgi) directly enables remote code execution via crafted HTTP POST, mapping to exploitation of public apps and Unix shell command execution.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents OS command injection by implementing input validation mechanisms on the `restart_min` POST parameter in adm.cgi sch_reboot() before executing system commands.
Remediates the specific command injection flaws in the Wavlink router firmware through identification, reporting, and correction via patches.
Enforces restrictions on information input such as format, length, or character sets for the `restart_min` parameter to block malicious command payloads.