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CVE-2026-122120

Quick assessment

Affected
Yealink Plug-in Softwares
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 2.35.219.0 版本之前的 Yealink 插件软件中，存在一个在特定场景下可被利用的未经授权文件写入漏洞，攻击者可借此实现远程代码执行。

CVSS 9.0 · Critical

Affected Version Matrix 1

VendorProduct Version RangeStatus
Yealink Plug-in Softwares < 2.35.219.0 affected
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I. Basic Information for CVE-2026-122120

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Yealink Plug-in Softwares before 2.35.219.0, there is an unauthorized file write vulnerability under specific scenarios, which may be exploited by attackers to achieve remote code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Yealink Plug-in Softwares 0 ~ 2.35.219.0 -

II. Public POCs for CVE-2026-122120

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III. Intelligence Information for CVE-2026-122120

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Other References for CVE-2026-122120 (2)

Same Patch Batch · Yealink · 2026-11-04 · 5 CVEs total

CVE-2026-122148 8.2 HIGH Yealink MeetingBoard Pro 前端验证绕过漏洞
CVE-2026-122118 7.4 HIGH Yealink 产品弱密码漏洞：WPA2 默认 PSK 可被暴力破解
CVE-2026-122124 6.1 MEDIUM Yealink UVC40 E2 固件越权与窃听漏洞
CVE-2026-122116 4.3 MEDIUM Yealink 固件 Wi-Fi 802.1X 配置访问控制漏洞

IV. Related Vulnerabilities

Same vendor: Yealink
Same weakness: CWE-434