{"cve":"CVE-2011-2393","nvd":{"published":"2012-02-02T17:55:00.910","modified":"2026-06-16T23:31:14.887","status":"Modified","description":"The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD, NetBSD, and possibly other BSD-based operating systems allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, a similar vulnerability to CVE-2010-4670.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://seclists.org/fulldisclosure/2011/Apr/86","http://www.mh-sec.de/downloads/mh-RA_flooding_CVE-2010-multiple.txt","http://seclists.org/fulldisclosure/2011/Apr/86","http://www.mh-sec.de/downloads/mh-RA_flooding_CVE-2010-multiple.txt"],"products":["freebsd:freebsd","netbsd:netbsd"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-2393","score":0.01905,"percentile":0.79725,"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."]}