Remote Code Execution via Ping Function in Yealink T21P_E

Publication date: 2025-12-26

Last updated on: 2026-07-05

Assigner: MITRE

Description

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 Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-26

Last Modified

2026-07-05

Generated

2026-07-06

AI Q&A

2025-12-26

EPSS Evaluated

2026-07-05

NVD

CVE-2025-66738

Affected Vendors & Products

Vendor	Product	Version / Range
yealink	t21p_e2_phone	52.84.0.15

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Yealink T21P_E2 Phone 52.84.0.15 allows a remote attacker with normal privileges to execute arbitrary code by sending a specially crafted request to the ping function of the device's diagnostic component.

Impact Analysis

An attacker exploiting this vulnerability could execute arbitrary code remotely on the affected device, potentially leading to unauthorized control, data compromise, or disruption of phone functionality.

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