{"id":"CVE-2020-25926","aliases":["EUVD-2020-18556","GHSA-wvxg-xmpg-qcwx"],"status":"published","title":"The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the...","description":"The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is: a specific DNS response packet.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01262,"percentile":0.69847,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-331"],"published":"2021-08-18T18:35:28Z","modified":"2026-06-17T03:07:27Z","products":[{"vendor":"hcc-embedded","product":"nichestack_tcp\\/ip"}],"references":[{"url":"https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory"]},{"url":"https://www.kb.cert.org/vuls/id/608209","tags":["third-party-advisory","x_refsource_CERT-VN","x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25926"},{"url":"https://github.com/advisories/GHSA-wvxg-xmpg-qcwx"}],"sources":{"cve":[{"id":"CVE-2020-25926","description":"The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is: a specific DNS response packet.","status":"published","published":"2021-08-18T18:35:28Z","modified":"2024-08-04T15:49:06.631Z","updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2020-18556","description":"The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is: a specific DNS response packet.","status":"published","published":"2021-08-18T18:35:28Z","modified":"2024-08-04T15:49:06Z","updated_at":"2026-11-03T03:07:16.308974Z"}],"ghsa":[{"id":"GHSA-wvxg-xmpg-qcwx","title":"The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the...","description":"The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is: a specific DNS response packet.","status":"published","published":"2022-05-24T19:11:29Z","modified":"2023-01-30T05:01:36Z","cwes":["CWE-331"],"updated_at":"2026-11-02T14:46:26.905827Z"}],"nvd":[{"id":"CVE-2020-25926","description":"The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is: a specific DNS response packet.","status":"published","published":"2021-08-18T19:15:07.213Z","modified":"2026-06-17T03:07:27.48Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:06:45.704484Z"}]}}