ACTIVELY EXPLOITED
CVE-2021-27561: Yealink Device Management Server-Side Request Forgery (SSRF) Vulnerability
| Vendor | Yealink |
|---|---|
| Product | Device Management |
| Actively exploited | Yes |
| Added to CISA KEV | 3 Nov 2021 |
| CISA federal deadline | 17 Nov 2021 |
| Weakness (CWE) | CWE-78 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Yealink Device Management contains a server-side request forgery (SSRF) vulnerability that allows for unauthenticated remote code execution.
SOURCES
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.