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CVE-2026-108889— Yungengxin Cloud Billing IOCTL Process Termination LWBilling64.sys sub_14000443C exposed ioctl with insufficient access control

Quick assessment

Affected
Yungengxin Cloud Billing
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“盈信云计费”（Yungengxin Cloud Billing）2024.11.28.11 版本中发现了一个安全漏洞。该漏洞影响组件“IOCTL 进程终止”中的库文件 LWBilling64.sys，具体涉及函数 sub_14000443C。通过操纵参数 Pid，可导致存在访问控制不足的 IOCTL 调用被暴露。此漏洞需本地发起攻击才能利用。目前相关漏洞利用代码已经公开，可能被恶意使用。厂商在披露早期已被联系，但至今未作出任何回应。

CVSS 4.4 · Medium EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
Yungengxin Cloud Billing 2024.11.28.11 affected
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I. Basic Information for CVE-2026-108889

Vulnerability Information
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Vulnerability Title
Yungengxin Cloud Billing IOCTL Process Termination LWBilling64.sys sub_14000443C exposed ioctl with insufficient access control
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Yungengxin Cloud Billing 2024.11.28.11. Affected by this vulnerability is the function sub_14000443C in the library LWBilling64.sys of the component IOCTL Process Termination. Executing a manipulation of the argument Pid can lead to exposed ioctl with insufficient access control. The attack needs to be launched locally. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
无充分访问控制条件下暴露IOCTL
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Yungengxin Cloud Billing 2024.11.28.11 cpe:2.3:a:yungengxin:cloud_billing:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-108889

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III. Intelligence Information for CVE-2026-108889

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IV. Related Vulnerabilities

Same vendor: Yungengxin
Same weakness: CWE-782

V. Comments for CVE-2026-108889

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