CVE-2021-27561 Scanner
CVE-2021-27561 scanner - Command Injection vulnerability in Yealink Device Management (DM)
Used 2.3k times · 5.9k assets checked · url
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CISA Known Exploited Vulnerability
This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.
CVE
CVE-2021-27561
9.8
CVSScritical
Exploitable remotely over the internet · no authentication required.
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.
Attack Vector
Network
Privileges Req.
None
User Interaction
None
Updated Sep 14, 2026View on NVD →
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