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.
Basic Information
- CVE State
- PUBLISHED
- Reserved Date
- February 22, 2021
- Published Date
- October 15, 2021
- Last Updated
- October 21, 2025
- Vendor
- Yealink
- Product
- Device Management
- Description
- Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.
- Tags
- Exploitation
- active
- Automatable
- Yes
- Technical Impact
- total
- Exploited in the Wild
- Yes (2021-11-03 00:00:00 UTC) Source
cisa
nuclei_scanner
CVSS Scores
CVSS v3.1
9.8 - CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
10.0
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
SSVC Information
Exploit Status
References
Known Exploited Vulnerability Information
| Source | Added Date |
|---|---|
| CISA | 2021-11-03 00:00:00 UTC |
| CISA | 2021-11-03 00:00:00 UTC |
Scanner Integrations
| Scanner | URL | Date Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-27561.yaml | 2025-04-25 00:00:00 UTC |
Timeline
-
CVE ID Reserved
-
CVE Published to Public
-
Added to KEVIntel
-
Added to KEVIntel
-
Detected by Nuclei