Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-30135 is a critical-severity Command Injection (CWE-77) vulnerability in Tenda Ac18 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 16% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Tenda AC18 routers running firmware version v15.03.05.19(6318_)_cn contain a command-injection vulnerability in the setUsbUnload function, where the deviceName parameter is passed to a system command without adequate sanitization. The flaw is tracked as CVE-2023-30135, assigned CWE-77, and rated 9.8 under CVSS 3.1 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
An unauthenticated attacker with network access can supply a crafted deviceName value that results in arbitrary command execution on the device, granting the ability to read or modify data, alter configuration, or disrupt service. No authentication or user interaction is required for successful exploitation.
Public references consist of technical write-ups hosted on GitHub that demonstrate the injection vector; no vendor advisory or firmware patch addressing the issue is referenced in the available sources. The associated EPSS score has remained at 0.2642 with no material increase since disclosure.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-34564
Vulnerability Data
Tenda AC18 v15.03.05.19(6318_)_cn was discovered to contain a command injection vulnerability via the deviceName parameter in the setUsbUnload function.
- CWE(s)
Related Threats
CVEs Like This One
Affected Assets
Mitigating Controls
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.
A.8.25 mandates secure SDLC practices including secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training that reduce command injection defects, but leaves a minority slice (e.g. incomplete implementation of those practices, outsourced development without full assurance, or post-SDLC changes) where the weakness can still arise and be exploitable.
Application security requirements explicitly call for controls against injection flaws including command injection.
A.8.27 mandates security-by-design principles (e.g. distrust external input, secure session control, data validation/sanitization, least privilege) and design reviews that can stop command injection from being introduced, but this is only a minority slice of CWE-77 because the weakness can still arise in code that bypasses those principles, in non-reviewed components, or in runtime injection vectors the architecture review does not reach.
Secure coding standards require proper escaping and parameterization of commands, directly eliminating CWE-77.
Security testing in development catches command-injection vulnerabilities before release.
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-77, a class-level weakness, and none of its children carries one either.