CVE-2021-27561

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 Oct 15, 2021
  • CVSS 9.8 critical
  • 82.9% chance of exploitation in the next 30 days (EPSS)
  • In CISA's Known Exploited Vulnerabilities catalog

CVE-2021-27561 at the National Vulnerability Database