CVE-2023-29799
RCE in Totolink X18 Firmware 9.1.0cu.2024_b20220329
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-2023-29799 is a critical-severity Command Injection (CWE-77) vulnerability in Totolink X18 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 20% 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.
CVE-2023-29799 is a command-injection flaw (CWE-77) in the TOTOLINK X18 wireless router running firmware version V9.1.0cu.2024_B20220329. The vulnerability resides in the setOpModeCfg function, where the hostname parameter is passed to a system command without adequate sanitization, allowing arbitrary command execution.
An unauthenticated attacker can exploit the issue over the network by sending a crafted HTTP request containing shell metacharacters in the hostname field. Successful exploitation grants the attacker full control of the device, enabling actions such as configuration changes, traffic interception, or use of the router as a foothold for further attacks inside the local network. The CVSS 3.1 base score of 9.8 reflects the absence of required authentication or user interaction.
The associated EPSS score rose from a low baseline to a peak of 0.2264 before settling at the current value of 0.1490, indicating that exploitation interest increased measurably after public disclosure and that the vulnerability merits renewed attention.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-33337
Vulnerability Data
TOTOLINK X18 V9.1.0cu.2024_B20220329 was discovered to contain a command injection vulnerability via the hostname parameter in the setOpModeCfg 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.