{"id":"CVE-2021-27561","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-27561","summary":"Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.","details":"Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.","published":"2021-10-15T17:11:45.000Z","modified":"2025-10-21T23:25:28.403Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.82865,"percentile":0.99653,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":2,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://ssd-disclosure.com/?p=4688"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27561"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2025-10-21T23:25:28.403Z"}}