{"id":"CVE-2020-3116","aliases":["EUVD-2020-24387","GHSA-86c7-v7v4-whcp"],"status":"published","title":"Cisco Webex Centers Denial of Service Vulnerability","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.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00664,"percentile":0.52045,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-09-23T00:25:52Z","modified":"2026-06-17T03:17:22Z","products":[{"vendor":"cisco","product":"cisco webex event center"},{"vendor":"cisco","product":"webex_meetings_online"},{"vendor":"cisco","product":"webex_meetings_server"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200108-webex-centers-dos","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-3116"},{"url":"https://github.com/advisories/GHSA-86c7-v7v4-whcp"}],"sources":{"cve":[{"id":"CVE-2020-3116","title":"Cisco Webex Centers Denial of Service Vulnerability","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.","status":"published","published":"2020-09-23T00:25:52.24Z","modified":"2024-11-13T18:05:51.613Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:51.563355Z"}],"euvd":[{"id":"EUVD-2020-24387","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.","status":"published","published":"2020-09-23T00:25:52Z","modified":"2024-11-13T18:05:51Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:05:01.673157Z"}],"ghsa":[{"id":"GHSA-86c7-v7v4-whcp","title":"A vulnerability in the way Cisco Webex applications process Universal Communications Format (UCF)...","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.","status":"published","published":"2022-05-24T17:29:17Z","modified":"2023-01-29T05:04:12Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:29.899073Z"}],"nvd":[{"id":"CVE-2020-3116","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.","status":"published","published":"2020-09-23T01:15:14.737Z","modified":"2026-06-17T03:17:22.71Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:15.83396Z"}]}}