{"id":"CVE-2012-10055","aliases":["EUVD-2012-6606","GHSA-54qp-xm8v-h899"],"status":"published","title":"ComSndFTP v1.3.7 Beta USER Format String RCE","description":"ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of the USER command. By sending a specially crafted username containing format specifiers, a remote attacker can overwrite a hardcoded function pointer in memory (specifically WSACleanup from Ws2_32.dll). This allows the attacker to redirect execution flow and bypass DEP protections using a ROP chain, ultimately leading to arbitrary code execution. The vulnerability is exploitable without authentication and affects default configurations.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.02556,"percentile":0.85176,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-134"],"published":"2025-08-13T20:33:06Z","modified":"2026-07-15T01:23:14Z","exploits":[{"source":"metasploit","id":"exploit/windows/ftp/comsnd_ftpd_fmtstr","title":"ComSndFTP v1.3.7 Beta USER Format String (Write4) Vulnerability","type":"exploit","platform":"Windows","date":"2012-06-08","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/windows/ftp/comsnd_ftpd_fmtstr"}],"products":[{"vendor":"comsndftp","product":"ftp server"},{"vendor":"pcman","product":"ftp server"}],"references":[{"url":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/comsnd_ftpd_fmtstr.rb","tags":["exploit"]},{"url":"https://www.exploit-db.com/exploits/19024","tags":["exploit"]},{"url":"https://www.exploit-db.com/exploits/19177","tags":["exploit"]},{"url":"https://web.archive.org/web/20120317214524/http://ftp.comsnd.com/","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/comsndftp-user-format-string-rce","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-10055"},{"url":"https://web.archive.org/web/20120317214524/http://ftp.comsnd.com"},{"url":"https://github.com/advisories/GHSA-54qp-xm8v-h899"}],"sources":{"cve":[{"id":"CVE-2012-10055","title":"ComSndFTP v1.3.7 Beta USER Format String RCE","description":"ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of the USER command. By sending a specially crafted username containing format specifiers, a remote attacker can overwrite a hardcoded function pointer in memory (specifically WSACleanup from Ws2_32.dll). This allows the attacker to redirect execution flow and bypass DEP protections using a ROP chain, ultimately leading to arbitrary code execution. The vulnerability is exploitable without authentication and affects default configurations.","status":"published","published":"2025-08-13T20:33:06.598Z","modified":"2026-07-15T01:23:14.475Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T14:34:49.937255Z"}],"euvd":[{"id":"EUVD-2012-6606","description":"ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of the USER command. By sending a specially crafted username containing format specifiers, a remote attacker can overwrite a hardcoded function pointer in memory (specifically WSACleanup from Ws2_32.dll). This allows the attacker to redirect execution flow and bypass DEP protections using a ROP chain, ultimately leading to arbitrary code execution. The vulnerability is exploitable without authentication and affects default configurations.","status":"published","published":"2025-08-13T20:33:06Z","modified":"2026-07-15T01:23:14Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T18:19:55.318488Z"}],"ghsa":[{"id":"GHSA-54qp-xm8v-h899","title":"ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of...","description":"ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of the USER command. By sending a specially crafted username containing format specifiers, a remote attacker can overwrite a hardcoded function pointer in memory (specifically WSACleanup from Ws2_32.dll). This allows the attacker to redirect execution flow and bypass DEP protections using a ROP chain, ultimately leading to arbitrary code execution. The vulnerability is exploitable without authentication and affects default configurations.","status":"published","published":"2025-08-13T21:30:30Z","modified":"2025-08-13T21:30:41Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T15:03:16.715076Z"}],"nvd":[{"id":"CVE-2012-10055","description":"ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of the USER command. By sending a specially crafted username containing format specifiers, a remote attacker can overwrite a hardcoded function pointer in memory (specifically WSACleanup from Ws2_32.dll). This allows the attacker to redirect execution flow and bypass DEP protections using a ROP chain, ultimately leading to arbitrary code execution. The vulnerability is exploitable without authentication and affects default configurations.","status":"published","published":"2025-08-13T21:15:29.84Z","modified":"2026-06-16T23:38:45.447Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T14:02:18.043773Z"}]}}