{"schemaVersion":3,"id":"CVE-2021-34812","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Use of hard-coded credentials vulnerability in php component in Synology Calendar before 2.4.0-0761 allows remote attackers to obtain sensitive information via unspecified vectors.","dates":{"published":"2021-06-18T03:00:12.747Z","modified":"2024-09-17T01:31:29.491Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.8,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01119,"percentile":0.65637,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01119},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01119,"percentile":0.65637}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01119,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01119,"percentile":0.65637}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-798","name":"Use of Hard-coded Credentials","description":"The product contains hard-coded credentials, such as a password or cryptographic key.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/798.html"}],"affected":[{"vendor":"synology","product":"calendar","name":"calendar","label":"calendar","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.4.0-0761","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.4.0-0761","eol":null,"hubHref":"/vendor/synology/calendar"},{"vendor":"synology","product":"synology calendar","name":"Synology Calendar","label":"synology calendar","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 2.4.0-0761","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 2.4.0-0761","eol":null,"hubHref":"/vendor/synology/synology_calendar"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.synology.com/security/advisory/Synology_SA_21_12","label":"www.synology.com/security/advisory/Synology_SA_21_12","hostname":"www.synology.com","tags":["X Refsource CONFIRM","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-06-18T03:00:12.747Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-17T01:31:29.491Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:10:50.331Z","stale":false,"partial":false}}