VULNERABILITY INTELLIGENCE

CVE-2021-27561

CVSS score9.8 CRITICAL
EPSS probability82.86%
CISA KEVKnown exploited vulnerability
Published2021-10-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Yealink Device Management Server-Side Request Forgery (SSRF) Vulnerability

Vendor / product: Yealink / 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.

Weakness classification

  • nvd@nist.gov: CWE-78
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-78

Primary references