{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2012-10055","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2025-08-11T18:15:05.776Z","datePublished":"2025-08-13T20:33:06.598Z","dateUpdated":"2026-04-07T14:02:48.400Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["Format string parsing in FTP login handler"],"product":"FTP Server","vendor":"ComSndFTP","versions":[{"status":"affected","version":"1.3.7 Beta"}]}],"credits":[{"lang":"en","type":"finder","value":"ChaoYi Huang"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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."}],"value":"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."}],"impacts":[{"capecId":"CAPEC-135","descriptions":[{"lang":"en","value":"CAPEC-135 Format String Injection"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-134","description":"CWE-134 Use of Externally-Controlled Format String","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-04-07T14:02:48.400Z"},"references":[{"tags":["exploit"],"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":["product"],"url":"https://web.archive.org/web/20120317214524/http://ftp.comsnd.com/"},{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/comsndftp-user-format-string-rce"}],"source":{"discovery":"UNKNOWN"},"tags":["unsupported-when-assigned"],"title":"ComSndFTP v1.3.7 Beta USER Format String RCE","x_generator":{"engine":"Vulnogram 0.2.0"},"datePublic":"2012-06-08T00:00:00.000Z"},"adp":[{"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"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-14T13:49:56.063256Z","id":"CVE-2012-10055","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-08-14T13:49:59.657Z"}}]}}