CVE-2021-27561
KEVCRITICAL 9.8EPSS 82.9%
Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 10.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C - EPSS
- 82.86% chance of exploitation in the next 30 days, 100th percentile
- CISA KEV
- added 2021-11-03
- Nuclei
- critical · CWE-78
- Published
- 2021-10-15
- Updated
- 2025-10-21