9.8Critical
KEV
CVE-2021-27561Yealink Device Management Server-Side Request Forgery (SSRF) Vulnerability
Known exploited — Yealink Device Management Server-Side Request Forgery (SSRF) Vulnerability
CISA confirmed this vulnerability is used in real attacks on 03.11.2021. Remediation deadline for US federal agencies: 17.11.2021.
Required action: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-27561
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 (CWE):
CWE-78
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| yealink | device management | ≤ 3.6.0.20 |
References and patches
- https://ssd-disclosure.com/?p=4688 Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27561 US Government Resource
CPE matches (NVD) (1)
cpe:2.3:a:yealink:device_management:*:*:*:*:*:*:*:*≤ 3.6.0.20