Unauthorized File Write Vulnerability in Yealink Plug-in Software
CVE-2026-122120

9CRITICAL

Key Information:

Vendor

Yealink

Status
Plug-in Softwares
Vendor
CVE Published:
4 November 2026

What is CVE-2026-122120?

A vulnerability exists in the Yealink Plug-in Software prior to version 2.35.219.0 that allows unauthorized file write operations. This flaw can be exploited under specific conditions, enabling attackers to potentially execute remote code, posing a significant security risk to systems utilizing the affected software.

Affected Version(s)

Plug-in Softwares Windows 0 < 2.35.219.0

References

https://www.yealink.com/en/trust-center/security-bulletin...
https://support.yealink.com/product-detail/0198a686-f259-...

CVSS V3.1

Score:
9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.