{"id":"CVE-2021-39363","aliases":["EUVD-2021-25724","GHSA-w2mr-cg64-pjp5"],"status":"published","title":"Honeywell HDZP252DI 1.00.HW02.4 and HBW2PER1 1.000.HW01.3 devices allow a video replay attack...","description":"Honeywell HDZP252DI 1.00.HW02.4 and HBW2PER1 1.000.HW01.3 devices allow a video replay attack after ARP cache poisoning has been achieved.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01418,"percentile":0.73173,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77"],"published":"2022-02-24T21:13:52Z","modified":"2026-06-17T04:03:37Z","products":[{"vendor":"honeywell","product":"hbw2per1_firmware"},{"vendor":"honeywell","product":"hdzp252di_firmware"}],"references":[{"url":"https://www.honeywell.com/us/en/product-security","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://buildings.honeywell.com/us/en/brands/our-brands/security/support-and-resources/product-resources/eol-and-security-notices","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://buildings.honeywell.com/content/dam/hbtbt/en/documents/downloads/Security_Notification_SN_2022-01-26-01_CVE-2021-39363_Command_Injection_HDZP252DI.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39363"},{"url":"https://github.com/advisories/GHSA-w2mr-cg64-pjp5"}],"sources":{"cve":[{"id":"CVE-2021-39363","description":"Honeywell HDZP252DI 1.00.HW02.4 and HBW2PER1 1.000.HW01.3 devices allow a video replay attack after ARP cache poisoning has been achieved.","status":"published","published":"2022-02-24T21:13:52Z","modified":"2024-08-04T02:06:42.434Z","updated_at":"2026-11-02T14:33:09.540052Z"}],"euvd":[{"id":"EUVD-2021-25724","description":"Honeywell HDZP252DI 1.00.HW02.4 and HBW2PER1 1.000.HW01.3 devices allow a video replay attack after ARP cache poisoning has been achieved.","status":"published","published":"2022-02-24T21:13:52Z","modified":"2024-08-04T02:06:42Z","updated_at":"2026-11-03T03:24:23.719378Z"}],"ghsa":[{"id":"GHSA-w2mr-cg64-pjp5","title":"Honeywell HDZP252DI 1.00.HW02.4 and HBW2PER1 1.000.HW01.3 devices allow a video replay attack...","description":"Honeywell HDZP252DI 1.00.HW02.4 and HBW2PER1 1.000.HW01.3 devices allow a video replay attack after ARP cache poisoning has been achieved.","status":"published","published":"2022-02-25T00:00:55Z","modified":"2023-02-03T05:06:06Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:53:50.761362Z"}],"nvd":[{"id":"CVE-2021-39363","description":"Honeywell HDZP252DI 1.00.HW02.4 and HBW2PER1 1.000.HW01.3 devices allow a video replay attack after ARP cache poisoning has been achieved.","status":"published","published":"2022-02-24T22:15:08.267Z","modified":"2026-06-17T04:03:37.803Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:07:05.198719Z"}]}}