Loading vulnerability…
ComSndFTP FTP Server 1.3.7 Beta contains a remotely exploitable format string vulnerability in its processing of the FTP USER command. A remote, unauthenticated attacker can supply a specially crafted username containing format specifiers, which the server unsafely interprets as a format string. According to the provided content, exploitation enables overwriting of a hardcoded function pointer in memory, specifically the WSACleanup pointer from Ws2_32.dll. By corrupting this pointer and redirecting control flow, an attacker can chain return-oriented programming (ROP) techniques to bypass DEP and achieve arbitrary code execution on the target system. The issue is present in the default configuration and does not require prior authentication.
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 (modules/exploits/windows/ftp/comsnd_ftpd_fmtstr.rb) that exploits a format string vulnerability in the ComSndFTP FTP Server version 1.3.7 beta. The exploit works by sending a specially crafted username (via the FTP USER command) containing format string specifiers, which allows the attacker to overwrite a function pointer in memory (specifically, the WSACleanup pointer in Ws2_32.dll). The exploit includes ROP chains for both Windows XP SP3 and Windows Server 2003 targets to bypass DEP and execute arbitrary code. The payload is fully customizable using Metasploit's payload system, allowing for reverse shells, Meterpreter sessions, or other code execution. The exploit is weaponized, reliable, and leverages a network attack vector against the FTP service (default port 21). No hardcoded IP addresses or domains are present; the only fingerprintable endpoint is the FTP port. The module is well-documented, references CVE-2012-10055, and is suitable for penetration testing against vulnerable ComSndFTP installations.
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.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.