{"id":"CVE-2023-22814","aliases":["EUVD-2023-26926","GHSA-vh8r-vpp8-mfq5"],"status":"published","title":"Authentication Bypass issue in My Cloud OS 5 devices","description":"An authentication bypass issue via spoofing was discovered in the token-based authentication mechanism that could allow an attacker to carry out an impersonation attack.\n\n\nThis issue affects My Cloud OS 5 devices: before 5.26.202.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00687,"percentile":0.53108,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-290"],"published":"2023-06-30T23:05:43Z","modified":"2026-06-17T05:36:13Z","products":[{"vendor":"western digital","product":"my cloud os 5"},{"vendor":"westerndigital","product":"my_cloud_os"},{"vendor":"westerndigital","product":"my_cloud_os_5"}],"references":[{"url":"https://www.westerndigital.com/support/product-security/wdc-23006-my-cloud-firmware-version-5-26-202","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22814"},{"url":"https://github.com/advisories/GHSA-vh8r-vpp8-mfq5"}],"sources":{"cve":[{"id":"CVE-2023-22814","title":"Authentication Bypass issue in My Cloud OS 5 devices","description":"An authentication bypass issue via spoofing was discovered in the token-based authentication mechanism that could allow an attacker to carry out an impersonation attack.\n\n\nThis issue affects My Cloud OS 5 devices: before 5.26.202.\n\n","status":"published","published":"2023-06-30T23:05:43.13Z","modified":"2024-11-26T16:09:14.746Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:35:15.779187Z"}],"euvd":[{"id":"EUVD-2023-26926","description":"An authentication bypass issue via spoofing was discovered in the token-based authentication mechanism that could allow an attacker to carry out an impersonation attack.\n\n\nThis issue affects My Cloud OS 5 devices: before 5.26.202.\n\n","status":"published","published":"2023-06-30T23:05:43Z","modified":"2024-11-26T16:09:14Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:04:46.610778Z"}],"ghsa":[{"id":"GHSA-vh8r-vpp8-mfq5","title":"An authentication bypass issue via spoofing was discovered in the token-based authentication...","description":"An authentication bypass issue via spoofing was discovered in the token-based authentication mechanism that could allow an attacker to carry out an impersonation attack.\n\n\nThis issue affects My Cloud OS 5 devices: before 5.26.202.\n\n","status":"published","published":"2023-07-01T00:30:45Z","modified":"2024-04-04T05:19:25Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","level":"critical"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:56:31.130891Z"}],"nvd":[{"id":"CVE-2023-22814","description":"An authentication bypass issue via spoofing was discovered in the token-based authentication mechanism that could allow an attacker to carry out an impersonation attack.\n\n\nThis issue affects My Cloud OS 5 devices: before 5.26.202.\n\n","status":"published","published":"2023-07-01T00:15:09.97Z","modified":"2026-06-17T05:36:13.857Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","level":"critical","assessor":"secondary"},{"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"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:08:14.715708Z"}]}}