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CVE-2024-3912 is a critical vulnerability affecting certain ASUS router models that allows arbitrary firmware upload and can be exploited by a remote, unauthenticated attacker to execute arbitrary system commands on the device. The flaw is described as an arbitrary firmware upload issue in router firmware or management functionality, enabling an attacker to reach command execution without prior authentication. Successful exploitation can result in full compromise of the affected router.
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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.
Repository contains a minimal proof/replication of a Mirai two-stage exploit chain targeting ASUS router management interfaces over TLS. Structure: (1) README.md explains the motivation and includes an observed Mirai distribution URL; (2) poc.py is the sole exploit code (Python 3) and entry point. poc.py implements a network-based exploit over HTTPS/TLS to a user-specified host/port. It disables certificate validation and sends two raw HTTP-like requests: - Stage 1 (SETROOTCERTIFICATE): sends an XML body where the <cert> field contains a /bin/sh script; the placeholder 'command-to-run' is replaced with the user-provided command. This stage is intended to cause an arbitrary file write to a certificate file path (noted as /tmp/etc/cert.pem.1). - Stage 2 (APPLYAPP): triggers command execution by abusing the RC_SERVICE header with backtick injection: RC_SERVICE: `sh /etc/cert.pem.1`, causing the previously written script to execute. Capabilities: remote arbitrary file write + remote command execution (RCE) with attacker-supplied command. No scanning, persistence, or C2 logic is included; it is a direct exploit driver replicating observed Mirai behavior.
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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 previously reported critical ASUS router vulnerability allowing unauthenticated remote attackers to execute arbitrary system commands on affected devices.
A code execution vulnerability affecting multiple ASUS DSL router models, for which ASUS released updated firmware.
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.