{"cve":"CVE-2022-43501","nvd":{"published":"2023-02-10T04:15:11.107","modified":"2026-06-17T05:06:40.760","status":"Modified","description":"KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-330"],"references":["https://jvn.jp/en/vu/JVNVU99551468/","https://www.elwsc.co.jp/news/6352","https://jvn.jp/en/vu/JVNVU99551468/","https://www.elwsc.co.jp/news/6352"],"products":["elwsc:kasago_ipv4","elwsc:kasago_ipv4_light","elwsc:kasago_ipv6\\/v4_dual","elwsc:kasago_mobile_ipv6"],"source":"nvd","synced_at":"2026-10-19T21:37:38.595364862+00:00"},"epss":{"cve":"CVE-2022-43501","score":0.00565,"percentile":0.46954,"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."]}