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CVE-2026-15515— Tencent PC Manager QMUDisk Driver qmudisk64.sys uncontrolled search path

Quick assessment

Affected
Tencent PC Manager
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tencent PC Manager是中国Tencent公司的一款信息化产品。 Tencent PC Manager 18.1.30242.301版本存在权限许可和访问控制问题漏洞，该漏洞源于库qmudisk64.sys中的QMUDisk Driver组件中存在不受控制的搜索路径问题。

CVSS 7.0 · High EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
Tencent PC Manager 18.1.30242.301 affected
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I. Basic Information for CVE-2026-15515

Vulnerability Information
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Vulnerability Title
Tencent PC Manager QMUDisk Driver qmudisk64.sys uncontrolled search path
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in Tencent PC Manager 18.1.30242.301. This issue affects some unknown processing in the library qmudisk64.sys of the component QMUDisk Driver. The manipulation leads to uncontrolled search path. The attack must be carried out locally. The attack is considered to have high complexity. The exploitability is assessed as difficult. The exploit has been disclosed publicly 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:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对搜索路径元素未加控制
Source: CVE Program / CVE List V5
Vulnerability Title
Tencent PC Manager 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tencent PC Manager是中国Tencent公司的一款信息化产品。 Tencent PC Manager 18.1.30242.301版本存在权限许可和访问控制问题漏洞，该漏洞源于库qmudisk64.sys中的QMUDisk Driver组件中存在不受控制的搜索路径问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tencent PC Manager 18.1.30242.301 cpe:2.3:a:tencent:pc_manager:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-15515

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6252 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-15515

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Proof of Concept for CVE-2026-15515 (1)

IV. Related Vulnerabilities

Same product: PC Manager
Same vendor: Tencent
Same weakness: CWE-427

V. Comments for CVE-2026-15515

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