{"cve":"CVE-2001-0323","nvd":{"published":"2001-06-02T04:00:00.000","modified":"2026-06-16T21:54:05.937","status":"Modified","description":"The ICMP path MTU (PMTU) discovery feature in various UNIX systems allows remote attackers to cause a denial of service by spoofing \"ICMP Fragmentation needed but Don't Fragment (DF) set\" packets between two target hosts, which could cause one host to lower its MTU when transmitting to the other host.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://marc.info/?l=bugtraq&m=97958349623450&w=2","http://www.mandriva.com/security/advisories?name=MDVSA-2013:150","http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html","https://exchange.xforce.ibmcloud.com/vulnerabilities/5975","http://marc.info/?l=bugtraq&m=97958349623450&w=2"],"products":[],"source":"nvd","synced_at":"2026-10-19T19:33:02.361923049+00:00"},"epss":{"cve":"CVE-2001-0323","score":0.01657,"percentile":0.76613,"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."]}