{"id":"CVE-2017-15887","aliases":["EUVD-2017-7306","GHSA-prqg-8whh-c62q"],"status":"published","title":"An improper restriction of excessive authentication attempts vulnerability in /principals in...","description":"An improper restriction of excessive authentication attempts vulnerability in /principals in Synology CardDAV Server before 6.0.7-0085 allows remote attackers to obtain user credentials via a brute-force attack.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01936,"percentile":0.80204,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-307"],"published":"2017-11-07T15:00:00Z","modified":"2026-06-17T01:08:26Z","products":[{"vendor":"synology","product":"carddav_server"},{"vendor":"synology","product":"synology carddav server"}],"references":[{"url":"https://www.synology.com/en-global/support/security/Synology_SA_17_64_CardDAV_Server","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-15887"},{"url":"https://github.com/advisories/GHSA-prqg-8whh-c62q"}],"sources":{"cve":[{"id":"CVE-2017-15887","description":"An improper restriction of excessive authentication attempts vulnerability in /principals in Synology CardDAV Server before 6.0.7-0085 allows remote attackers to obtain user credentials via a brute-force attack.","status":"published","published":"2017-11-07T15:00:00Z","modified":"2024-09-16T22:03:13.049Z","cwes":["CWE-307"],"updated_at":"2026-11-02T14:33:14.271248Z"}],"euvd":[{"id":"EUVD-2017-7306","description":"An improper restriction of excessive authentication attempts vulnerability in /principals in Synology CardDAV Server before 6.0.7-0085 allows remote attackers to obtain user credentials via a brute-force attack.","status":"published","published":"2017-11-07T15:00:00Z","modified":"2024-09-16T22:03:13Z","updated_at":"2026-11-03T00:55:06.207566Z"}],"ghsa":[{"id":"GHSA-prqg-8whh-c62q","title":"An improper restriction of excessive authentication attempts vulnerability in /principals in...","description":"An improper restriction of excessive authentication attempts vulnerability in /principals in Synology CardDAV Server before 6.0.7-0085 allows remote attackers to obtain user credentials via a brute-force attack.","status":"published","published":"2022-05-13T01:37:33Z","modified":"2023-02-01T05:09:06Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:50:55.065879Z"}],"nvd":[{"id":"CVE-2017-15887","description":"An improper restriction of excessive authentication attempts vulnerability in /principals in Synology CardDAV Server before 6.0.7-0085 allows remote attackers to obtain user credentials via a brute-force attack.","status":"published","published":"2017-11-07T15:29:00.197Z","modified":"2026-06-17T01:08:26.337Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:04:08.01771Z"}]}}