Loading vulnerability…
A buffer overflow vulnerability exists in the 'libclinkc.so' library used by the 'zhttpd' web server component of Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0. This flaw allows remote, unauthenticated attackers to exploit improper bounds checking, potentially leading to arbitrary OS command execution or denial-of-service on the affected device.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module targeting a buffer overflow vulnerability (CVE-2023-28769) in the zhttpd binary present on over 40 Zyxel routers and CPE devices. The exploit is unauthenticated and allows remote code execution as root via the device's web interface, provided the attacker has network access (typically LAN) to the device. The module checks for vulnerability by attempting to read /etc/passwd, then serves a payload (default: meterpreter reverse shell for ARMLE) via an HTTP server. The exploit crafts a buffer overflow in the /Export_Log endpoint, causing the device to download and execute the attacker's payload. The code is operational and leverages Metasploit's payload generation and HTTP server capabilities. The main file is written in Ruby and is structured according to Metasploit's exploit module conventions.
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.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.