CVE-2021-27561
Yealink Device Management Server-Side Request Forgery (SSRF) Vulnerability
Severity Score
9.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
Yes
*KEV
Decision
Act
*SSVC
Descriptions
Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.
Yealink Device Management (DM) 3.6.0.20 permite la inyección de comandos como root por medio del URI /sm/api/v1/firewall/zone/services, sin autenticación.
Yealink Device Management contains a server-side request forgery (SSRF) vulnerability that allows for unauthenticated remote code execution.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Act
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-02-22 CVE Reserved
- 2021-10-15 CVE Published
- 2021-11-03 Exploited in Wild
- 2021-11-17 KEV Due Date
- 2025-01-16 EPSS Updated
- 2025-02-04 CVE Updated
- ---------- First Exploit
CWE
- CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://ssd-disclosure.com/?p=4688 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Yealink Search vendor "Yealink" | Device Management Search vendor "Yealink" for product "Device Management" | <= 3.6.0.20 Search vendor "Yealink" for product "Device Management" and version " <= 3.6.0.20" | - |
Affected
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