{"cve":"CVE-2006-3216","nvd":{"published":"2006-06-24T01:06:00.000","modified":"2026-06-16T22:26:38.493","status":"Modified","description":"Clearswift MAILsweeper for SMTP before 4.3.20 and MAILsweeper for Exchange before 4.3.20 allows remote attackers to cause a denial of service via (1) non-ASCII characters in a reverse DNS lookup result from a Received header, which leads to a Receiver service stop, and (2) unspecified vectors involving malformed messages, which causes \"unpredictable behavior\" that prevents the Security service from processing more messages.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://download.mimesweeper.com/www/TechnicalDocumentation/ReadMe_MSW_4%2C3%2C20.htm","http://secunia.com/advisories/20756","http://www.osvdb.org/26738","http://www.osvdb.org/26739","http://www.securityfocus.com/bid/18584"],"products":["clearswift:mailsweeper_for_exchange","clearswift:mailsweeper_for_smtp"],"source":"nvd","synced_at":"2026-10-19T19:42:44.451428143+00:00"},"epss":{"cve":"CVE-2006-3216","score":0.01856,"percentile":0.79194,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}