{"schemaVersion":3,"id":"CVE-2020-3116","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability in the way Cisco Webex applications process Universal Communications Format (UCF) files could allow an attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of UCF media files. An attacker could exploit this vulnerability by sending a user a malicious UCF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit would cause the application to quit unexpectedly.","dates":{"published":"2020-09-23T00:25:52.240Z","modified":"2024-11-13T18:05:51.613Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":5.5,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00664,"percentile":0.50842,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00664},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00664,"percentile":0.50842}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00664,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00664,"percentile":0.50842}]},"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-20","name":"Improper Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"}],"affected":[{"vendor":"cisco","product":"cisco webex event center","name":"Cisco WebEx Event Center","label":"cisco webex event center","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"n/a","noFixRecorded":false,"fixedIn":null}],"versionsText":"n/a","eol":null,"hubHref":"/vendor/cisco/cisco_webex_event_center"},{"vendor":"cisco","product":"webex_meetings_online","name":"webex meetings online","label":"webex_meetings_online","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.3.43","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.3.43","eol":null,"hubHref":"/vendor/cisco/webex_meetings_online"},{"vendor":"cisco","product":"webex_meetings_server","name":"webex meetings server","label":"webex_meetings_server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"4.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"4.0","eol":null,"hubHref":"/vendor/cisco/webex_meetings_server"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200108-webex-centers-dos","label":"tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200108-webex-centers-dos","hostname":"tools.cisco.com","tags":["Vendor Advisory","X Refsource CISCO"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-09-23T00:25:52.240Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-11-13T18:05:51.613Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T15:45:09.029Z","stale":false,"partial":false}}