{"id":"CVE-2026-20034","aliases":["EUVD-2026-27847","GHSA-wfvp-xw34-rhwq"],"status":"published","title":"Cisco Unity Connection Remote Code Execution Vulnerability","description":"A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of a targeted device.\u0026nbsp;To exploit this vulnerability, the attacker must have valid user credentials on the affected device.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00712,"percentile":0.54035,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-35"],"published":"2026-05-06T16:16:05Z","modified":"2026-10-26T19:10:00Z","products":[{"vendor":"cisco","product":"cisco unity connection"},{"vendor":"cisco","product":"unity_connection"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-rce-ssrf-hENhuASy","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20034"},{"url":"https://github.com/advisories/GHSA-wfvp-xw34-rhwq"}],"sources":{"cve":[{"id":"CVE-2026-20034","title":"Cisco Unity Connection Remote Code Execution Vulnerability","description":"A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of a targeted device.\u0026nbsp;To exploit this vulnerability, the attacker must have valid user credentials on the affected device.","status":"published","published":"2026-05-06T16:16:05.322Z","modified":"2026-05-07T03:55:48.652Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-35"],"updated_at":"2026-11-02T13:35:33.380441Z"}],"euvd":[{"id":"EUVD-2026-27847","description":"A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of a targeted device.\u0026nbsp;To exploit this vulnerability, the attacker must have valid user credentials on the affected device.","status":"published","published":"2026-05-06T16:16:05Z","modified":"2026-05-07T03:55:48Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:05:15.738879Z"}],"ghsa":[{"id":"GHSA-wfvp-xw34-rhwq","title":"A vulnerability in the web-based management interface of Cisco Unity Connection could allow an...","description":"A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\n\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of a targeted device.\u0026nbsp;To exploit this vulnerability, the attacker must have valid user credentials on the affected device.","status":"published","published":"2026-05-06T18:30:30Z","modified":"2026-05-06T18:30:42Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-35"],"updated_at":"2026-11-02T15:07:55.247215Z"}],"nvd":[{"id":"CVE-2026-20034","description":"A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of a targeted device.\u0026nbsp;To exploit this vulnerability, the attacker must have valid user credentials on the affected device.","status":"published","published":"2026-05-06T17:16:20.093Z","modified":"2026-10-26T19:10:00.163Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-35"],"updated_at":"2026-11-02T14:12:17.418622Z"}]}}