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DD-WRT’s embedded web server (httpd) used by the management GUI contains an OS command injection flaw in versions 24 sp1 and other releases prior to build 12533. The vulnerable request handling for cgi-bin/ URIs fails to properly sanitize user-supplied input, allowing shell metacharacters to be interpreted by the underlying system shell. A remote attacker can send a crafted HTTP request to a cgi-bin/ endpoint and inject arbitrary commands for execution on the device.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (2 hidden).
This repository contains a single Metasploit module (modules/exploits/linux/http/ddwrt_cgibin_exec.rb) targeting a metacharacter injection vulnerability in the HTTP management server of DD-WRT wireless gateways (CVE-2009-2765). The exploit allows an unauthenticated attacker to execute arbitrary shell commands as root by sending a specially crafted HTTP GET request to the /cgi-bin/ endpoint. The module is weaponized, supporting customizable command payloads (such as reverse shells) and is suitable for operational use within the Metasploit framework. The code is written in Ruby and leverages Metasploit's HttpClient mixin for network communication. The main attack vector is remote network access to the HTTP server on the target device.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in DDWRT firmware for IoT devices exploited by the ShadowV2 Mirai-based botnet for initial infection and DDoS attacks.
An old vulnerability in DDWRT firmware for routers, exploited by Mirai-based botnets to compromise IoT devices and conscript them into DDoS botnets.
A vulnerability in DD-WRT firmware that was exploited by the ShadowV2 Mirai-based botnet to infect IoT devices.
A vulnerability in DD-WRT firmware exploited by the ShadowV2 Mirai-based botnet to compromise IoT devices.
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.