{"id":"CVE-2022-20814","aliases":["EUVD-2022-26064","GHSA-rg5m-fc62-h68h"],"status":"published","title":"Cisco Expressway Series and Cisco TelePresence VCS Improper Certificate Validation Vulnerability","description":"A vulnerability in the certificate validation of Cisco\u0026nbsp;Expressway-C and Cisco\u0026nbsp;TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data.\u0026nbsp;\u0026nbsp;The vulnerability is due to a lack of validation of the SSL server certificate that an affected device receives when it establishes a connection to a Cisco\u0026nbsp;Unified Communications Manager device. An attacker could exploit this vulnerability by using a man-in-the-middle technique to intercept the traffic between the devices, and then using a self-signed certificate to impersonate the endpoint. A successful exploit could allow the attacker to view the intercepted traffic in clear text or alter the contents of the traffic.\r\nNote: Cisco\u0026nbsp;Expressway-E is not affected by this vulnerability.Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0091,"percentile":0.60233,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2024-11-15T15:32:47Z","modified":"2026-06-17T04:25:10Z","products":[{"vendor":"cisco","product":"cisco telepresence video communication server (vcs) expressway"},{"vendor":"cisco","product":"telepresence_video_communication_server"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-csrf-sqpsSfY6","tags":["Vendor Advisory"]},{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt","tags":["Not Applicable"]},{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6","tags":["Not Applicable"]},{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cdp-wnALzvT2","tags":["Not Applicable"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-20814"},{"url":"https://github.com/advisories/GHSA-rg5m-fc62-h68h"}],"sources":{"cve":[{"id":"CVE-2022-20814","title":"Cisco Expressway Series and Cisco TelePresence VCS Improper Certificate Validation Vulnerability","description":"A vulnerability in the certificate validation of Cisco\u0026nbsp;Expressway-C and Cisco\u0026nbsp;TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data.\u0026nbsp;\u0026nbsp;The vulnerability is due to a lack of validation of the SSL server certificate that an affected device receives when it establishes a connection to a Cisco\u0026nbsp;Unified Communications Manager device. An attacker could exploit this vulnerability by using a man-in-the-middle technique to intercept the traffic between the devices, and then using a self-signed certificate to impersonate the endpoint. A successful exploit could allow the attacker to view the intercepted traffic in clear text or alter the contents of the traffic.\r\nNote: Cisco\u0026nbsp;Expressway-E is not affected by this vulnerability.Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T15:32:47.058Z","modified":"2024-11-15T21:15:35.408Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:34:24.971323Z"}],"euvd":[{"id":"EUVD-2022-26064","description":"A vulnerability in the certificate validation of Cisco\u0026nbsp;Expressway-C and Cisco\u0026nbsp;TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data.\u0026nbsp;\u0026nbsp;The vulnerability is due to a lack of validation of the SSL server certificate that an affected device receives when it establishes a connection to a Cisco\u0026nbsp;Unified Communications Manager device. An attacker could exploit this vulnerability by using a man-in-the-middle technique to intercept the traffic between the devices, and then using a self-signed certificate to impersonate the endpoint. A successful exploit could allow the attacker to view the intercepted traffic in clear text or alter the contents of the traffic.\r\nNote: Cisco\u0026nbsp;Expressway-E is not affected by this vulnerability.Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T15:32:47Z","modified":"2024-11-15T21:15:35Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:04:57.661321Z"}],"ghsa":[{"id":"GHSA-rg5m-fc62-h68h","title":"A vulnerability in the certificate validation of Cisco\u0026nbsp;Expressway-C and Cisco\u0026nbsp...","description":"A vulnerability in the certificate validation of Cisco\u0026nbsp;Expressway-C and Cisco\u0026nbsp;TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data.\u0026nbsp;\u0026nbsp;The vulnerability is due to a lack of validation of the SSL server certificate that an affected device receives when it establishes a connection to a Cisco\u0026nbsp;Unified Communications Manager device. An attacker could exploit this vulnerability by using a man-in-the-middle technique to intercept the traffic between the devices, and then using a self-signed certificate to impersonate the endpoint. A successful exploit could allow the attacker to view the intercepted traffic in clear text or alter the contents of the traffic.\nNote: Cisco\u0026nbsp;Expressway-E is not affected by this vulnerability.Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T18:30:49Z","modified":"2025-07-31T18:31:50Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:03:09.647668Z"}],"nvd":[{"id":"CVE-2022-20814","description":"A vulnerability in the certificate validation of Cisco\u0026nbsp;Expressway-C and Cisco\u0026nbsp;TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data.\u0026nbsp;\u0026nbsp;The vulnerability is due to a lack of validation of the SSL server certificate that an affected device receives when it establishes a connection to a Cisco\u0026nbsp;Unified Communications Manager device. An attacker could exploit this vulnerability by using a man-in-the-middle technique to intercept the traffic between the devices, and then using a self-signed certificate to impersonate the endpoint. A successful exploit could allow the attacker to view the intercepted traffic in clear text or alter the contents of the traffic.\r\nNote: Cisco\u0026nbsp;Expressway-E is not affected by this vulnerability.Cisco\u0026nbsp;has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","status":"published","published":"2024-11-15T16:15:22.67Z","modified":"2026-06-17T04:25:10.137Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:07:40.977475Z"}]}}