CVE-2016-20017
RCE in Dlink Dsl-2750B Firmware ≤ 1.05
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-2016-20017 is a critical-severity Command Injection (CWE-77) vulnerability in Dlink Dsl-2750B Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 0.8% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities 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.
D-Link DSL-2750B devices running firmware versions prior to 1.05 contain a command injection vulnerability in the login.cgi endpoint. The flaw, tracked as CVE-2016-20017 and assigned CWE-77, permits unauthenticated remote attackers to supply arbitrary commands through the cli parameter, resulting in a CVSS 3.1 score of 9.8.
An attacker with network access to the WAN or LAN interface can submit a crafted HTTP request to login.cgi and execute operating-system commands without credentials. Successful exploitation grants full control over the device, including the ability to read or modify configuration data, install persistent malware, or use the router as an entry point into attached networks.
D-Link published security announcement SAP10088 and made firmware version 1.05 available to address the issue. Public references also include exploit code on Exploit-DB and multiple Full Disclosure postings that document the injection vector.
The vulnerability was actively exploited in the wild between 2016 and 2022.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2016-3105
Vulnerability Data
D-Link DSL-2750B devices before 1.05 allow remote unauthenticated command injection via the login.cgi cli parameter, as exploited in the wild in 2016 through 2022.
- CWE(s)
- KEV Date Added
- 08 January 2024
Related Threats
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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.