{"cve":"CVE-2001-1244","nvd":{"published":"2001-07-07T04:00:00.000","modified":"2026-06-16T21:55:53.067","status":"Modified","description":"Multiple TCP implementations could allow remote attackers to cause a denial of service (bandwidth and CPU exhaustion) by setting the maximum segment size (MSS) to a very small number and requesting large amounts of data, which generates more packets with less TCP-level data that amplify network traffic and consume more server CPU to process.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://www.securityfocus.com/archive/1/195457","http://www.securityfocus.com/bid/2997","https://exchange.xforce.ibmcloud.com/vulnerabilities/6824","http://www.securityfocus.com/archive/1/195457","http://www.securityfocus.com/bid/2997"],"products":["freebsd:freebsd","hp:hp-ux","hp:vvos","linux:linux_kernel","microsoft:windows_2000","microsoft:windows_nt","netbsd:netbsd","openbsd:openbsd","sun:sunos"],"source":"nvd","synced_at":"2026-10-19T19:33:02.361923049+00:00"},"epss":{"cve":"CVE-2001-1244","score":0.21965,"percentile":0.97657,"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."]}