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.
History

Fri, 09 Jan 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Yealink sip-t21\(p\)e2
Yealink sip-t21\(p\)e2 Firmware
CPEs cpe:2.3:h:yealink:sip-t21\(p\)e2:-:*:*:*:*:*:*:*
cpe:2.3:o:yealink:sip-t21\(p\)e2_firmware:52.84.0.15:*:*:*:*:*:*:*
Vendors & Products Yealink sip-t21\(p\)e2
Yealink sip-t21\(p\)e2 Firmware

Mon, 29 Dec 2025 23:15:00 +0000

Type Values Removed Values Added
First Time appeared Yealink
Yealink ip Phone Sip-t21p
Yealink sip-t21p E2
Vendors & Products Yealink
Yealink ip Phone Sip-t21p
Yealink sip-t21p E2

Sat, 27 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 26 Dec 2025 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-23
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 26 Dec 2025 16:30:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2025-12-26T00:00:00.000Z

Updated: 2025-12-27T15:32:56.787Z

Reserved: 2025-12-08T00:00:00.000Z

Link: CVE-2025-66737

cve-icon Vulnrichment

Updated: 2025-12-26T16:39:05.946Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-26T17:15:44.090

Modified: 2026-01-09T20:35:06.457

Link: CVE-2025-66737

cve-icon Redhat

No data.