{"cve":"CVE-2016-6445","nvd":{"published":"2016-10-27T21:59:17.063","modified":"2026-06-17T00:51:02.670","status":"Modified","description":"A vulnerability in the Extensible Messaging and Presence Protocol (XMPP) service of the Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6 could allow an unauthenticated, remote attacker to masquerade as a legitimate user. This vulnerability is due to the XMPP service incorrectly processing a deprecated authentication scheme. A successful exploit could allow an attacker to access the system as another user.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-20"],"references":["http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161012-msc","http://www.securityfocus.com/bid/93517","http://www.securitytracker.com/id/1037000","http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161012-msc","http://www.securityfocus.com/bid/93517"],"products":["cisco:meeting_server"],"source":"nvd","synced_at":"2026-10-19T20:40:10.783210791+00:00"},"epss":{"cve":"CVE-2016-6445","score":0.02514,"percentile":0.84808,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}