CVE-2024-39800
Wavlink Wl-Wn533A8 Firmware m33a8.v5030.210505
Raw vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HSummary
CVE-2024-39800 is a critical-severity External Control of System or Configuration Setting (CWE-15) vulnerability in Wavlink Wl-Wn533A8 Firmware. Its CVSS base score is 9.1 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception by PATH Environment Variable (T1574.007); ranked in the top 23% 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 map to AC-3 (Access Enforcement) and AC-6 (Least Privilege) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2024-39800 consists of multiple external control of configuration vulnerabilities (CWE-15) in the openvpn.cgi openvpn_server_setup() functionality of the Wavlink AC3000 router running firmware version M33A8.V5030.210505, along with a configuration injection vulnerability in the `open_port` POST parameter. These flaws allow a specially crafted HTTP request to lead to arbitrary command execution. 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), indicating critical severity due to its network accessibility, low attack complexity, high privilege requirements, expanded scope, and high impact on confidentiality, integrity, and availability.
An authenticated attacker with high privileges can exploit these vulnerabilities by sending a specially crafted HTTP request to the affected openvpn.cgi endpoint. Successful exploitation enables arbitrary command execution on the device, potentially allowing full compromise of the router, including data exfiltration, further network pivoting, or persistent access.
The primary advisory from Talos Intelligence (TALOS-2024-2050) documents these issues; practitioners should consult it for detailed technical analysis and any recommended mitigations or patches, as no specific remediation details are provided in the CVE description.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38344
Vulnerability Data
Multiple external config control vulnerabilities exists in the openvpn.cgi openvpn_server_setup() 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 configuration injection…
more
vulnerability exists in the `open_port` POST parameter.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
—
—
- 4 hardening rules · 2 OS baselines
—
Mitigating Controls (NIST 800-53 r5) AI
Enforces approved authorizations for logical access to configuration resources so external parties cannot alter them.
Enforces documented access restrictions on all changes to system configuration, directly blocking unauthorized external control of settings.
Limits privileges to the minimum needed, reducing the set of users who can externally modify configuration.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Hardened configuration baselines and change controls directly limit external manipulation of settings.
Formal change and exception management catches externally driven configuration alterations.
Least-privilege access policies reduce unauthorized external modification of configuration values.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Configuration management directly prevents external tampering with system settings.
Access rights assignment determines who may change system settings.
Privileged access rights reduce the number of users who can alter configuration.
Information access restriction limits who can view or modify configuration data.
Change management enforces controlled, authorized modifications to settings.
Access control policies underpin the technical restrictions on configuration changes.