CVE-2025-66738

An issue in Yealink T21P_E2 Phone 52.84.0.15 allows a remote normal privileged attacker to execute arbitrary code via a crafted request the ping function of the diagnostic component.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://drive.google.com/file/d/13t5ywSPJMx4487njJcH3ZTNuc_k3h4ty/view?usp=sharing	Exploit

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:yealink:sip-t21\(p\)e2_firmware:52.84.0.15:*:*:*:*:*:*:*

cpe:2.3:h:yealink:sip-t21\(p\)e2:-:*:*:*:*:*:*:*

History

05 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) Un problema en el teléfono Yealink T21P_E2 52.84.0.15 permite a un atacante remoto con privilegios normales ejecutar código arbitrario a través de una solicitud manipulada a la función ping del componente de diagnóstico.

Information

Published : 2025-12-26 16:15

Updated : 2026-10-07 13:10

NVD link : CVE-2025-66738

Mitre link : CVE-2025-66738

CVE.ORG link : CVE-2025-66738

JSON object : View

Products Affected

yealink

sip-t21\(p\)e2
sip-t21\(p\)e2_firmware

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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