CVE-2025-66738

HIGH

CVSS v3.1: 8.8 · EPSS: 0.0060 (44.1 percentile)

NetworkNo user interactionCommand Injection

Source data as of:

At a glance

Severity
HIGH
CVSS
8.8 v3.1 · NVD
EPSS
0.0060 (44.1 percentile) · FIRST.org
CISA KEV
No
Type
Command Injection · NVD CWE
Attack conditions (CVSS vector)
NetworkNo user interaction · Source: NVD Vector
Affected vendors
yealink
Published
2025-12-26 · Modified: 2026-07-05
References
Jump to references (1)

CVSS / EPSS / KEV

CVSS v3.1 8.8 / 10 HIGH Source: NVD
EPSS 0.0060 44.1 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

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.

Record details

CVE ID
CVE-2025-66738
CVSS (v3.1)
8.8 (HIGH)
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore
2.8
Impact subscore
5.9
EPSS
0.0060 (44.1 percentile) — 2026-07-05
CISA KEV
No
Weakness (CWE)
CWE-77
Affected vendors
yealink
Affected configurations (CPE)
1
Published
2025-12-26
Modified
2026-07-05
Status
Modified

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same affected vendor

CVE-2024-33109 CRITICAL CVSS 9.9 CVE-2024-48352 HIGH CVSS 7.5 CVE-2025-66737 MEDIUM CVSS 4.3

Same weakness type (CWE)

CVE-2021-43163 CRITICAL CVSS 9.8 CVE-2021-44620 CRITICAL CVSS 9.8 CVE-2022-46640 CRITICAL CVSS 9.8 CVE-2023-31569 CRITICAL CVSS 9.8

Published the same year

CVE-2025-50567 CRITICAL CVSS 10.0 CVE-2025-63314 CRITICAL CVSS 10.0 CVE-2025-67108 CRITICAL CVSS 10.0 CVE-2025-67109 CRITICAL CVSS 10.0
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