{"id":"CVE-2025-45851","aliases":["EUVD-2025-19428","GHSA-phj5-p24p-qf22"],"status":"published","title":"An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of...","description":"An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the endpoint /ISAPI/Security/challenge. The vendor has stated that upgrading to V5.7.23_SP2 fixes the issue.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00615,"percentile":0.49784,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2025-06-27T00:00:00Z","modified":"2026-06-17T09:25:46Z","references":[{"url":"https://crashpark.weebly.com/blog/hikvision-ip-camera-unauthenticated-denial-of-service-dos"},{"url":"https://assets.hikvision.com/prd/public/all/files/202506/releasenote%5CNetwork_Camera-V5.7.23_SP2_Release_Note-E8.pdf"},{"url":"https://www.hikvision.com/en/support/download/firmware/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-45851"},{"url":"https://www.hikvision.com/en/support/download/firmware"},{"url":"https://github.com/advisories/GHSA-phj5-p24p-qf22"}],"sources":{"cve":[{"id":"CVE-2025-45851","description":"An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the endpoint /ISAPI/Security/challenge. The vendor has stated that upgrading to V5.7.23_SP2 fixes the issue.","status":"published","published":"2025-06-27T00:00:00Z","modified":"2025-06-30T16:25:49.829Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"updated_at":"2026-11-02T14:32:36.079745Z"}],"euvd":[{"id":"EUVD-2025-19428","description":"An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the endpoint /ISAPI/Security/challenge. The vendor has stated that upgrading to V5.7.23_SP2 fixes the issue.","status":"published","published":"2025-06-27T00:00:00Z","modified":"2025-06-30T16:25:49Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:32:15.30157Z"}],"ghsa":[{"id":"GHSA-phj5-p24p-qf22","title":"An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of...","description":"An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the endpoint /ISAPI/Security/challenge.","status":"published","published":"2025-06-27T12:31:16Z","modified":"2025-06-30T18:32:52Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:02:52.182291Z"}],"nvd":[{"id":"CVE-2025-45851","description":"An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the endpoint /ISAPI/Security/challenge. The vendor has stated that upgrading to V5.7.23_SP2 fixes the issue.","status":"published","published":"2025-06-27T12:15:36.817Z","modified":"2026-06-17T09:25:46.193Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"updated_at":"2026-11-02T14:11:14.781314Z"}]}}