CVE Catalog

CVE-2025-66738

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.58%

44th percentile - higher than 44% of all known CVEs

Summary

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

Risk Assessment

An attacker can take control of the device, compromising the confidentiality and integrity of voice communications and potentially using the phone as an entry point into the internal network.

Recommendation

Immediately update the Yealink T21P_E2 phone firmware to the latest available version and restrict access to diagnostic functions to trusted networks only.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS