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CVE-2019-16920 is an unauthenticated remote command execution vulnerability affecting multiple D-Link routers and related devices, including DIR-655C, DIR-866L, DIR-652, DHP-1565, DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825. The flaw is caused by improper neutralization of attacker-controlled input in the PingTest common gateway interface, including the /apply_sec.cgi endpoint referenced in public advisories. By supplying crafted input to the PingTest functionality, a remote attacker can inject operating system commands that are executed by the device. Because the vulnerable component processes requests without authentication, exploitation can be performed remotely against exposed devices and can result in full system compromise.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains two Python exploit scripts (CVE-2019-16920.py and CVE-2019-16920-MassPwn3r.py) targeting CVE-2019-16920, a remote unauthenticated command injection vulnerability in multiple D-Link router models. The exploit works by sending a crafted POST request to the /apply_sec.cgi endpoint, abusing the 'ping_test' action to inject and execute arbitrary system commands. The single-target script (CVE-2019-16920.py) takes an IP, port, and command as arguments, while the mass exploitation script (CVE-2019-16920-MassPwn3r.py) reads a list of IPs from bots.txt and attempts to exploit each in parallel using threads. The README.md provides usage instructions, a list of affected models, and a brief vulnerability description. The bots.txt file contains a sample list of target IP addresses. The exploit is operational, providing remote code execution on vulnerable devices without authentication.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A command injection vulnerability in multiple D-Link products, exploited by RondoDox.
A vulnerability listed as one of the infection exploits used by Mirai variant four to infect additional vulnerable hosts.
A remote code execution vulnerability in the D-Link DIR-866L PingTest functionality referenced as an IPS detection associated with APT41-related coverage.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.