CVE-2025-66737 — MEDIUM (4.3)

Vulnerability Description

Yealink T21P_E2 Phone 52.84.0.15 is vulnerable to Directory Traversal. A remote normal privileged attacker can read arbitrary files via a crafted request result read function of the diagnostic component.

CVSS Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Yealink	Sip-T21\(P\)E2 Firmware	52.84.0.15
Yealink	Sip-T21\(P\)E2	-

Related Weaknesses (CWE)

CWE-23

References

FAQ

What is CVE-2025-66737?

CVE-2025-66737 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Yealink T21P_E2 Phone 52.84.0.15 is vulnerable to Directory Traversal. A remote normal privileged attacker can read arbitrary files via a crafted request result read function of the diagnostic compone...

How severe is CVE-2025-66737?

CVE-2025-66737 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-66737?

Check the references section above for vendor advisories and patch information. Affected products include: Yealink Sip-T21\(P\)E2 Firmware, Yealink Sip-T21\(P\)E2.