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CVE-2025-4211— Improper Link Resolution Before File Access in QFileSystemEngine on Windows

Quick assessment

Affected
Qt Qt
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.

Qt是Qt开源的一个跨平台的应用程序开发框架。 Qt 5.15.18及之前版本、6.0.0至6.5.8版本和6.6.0至6.8.1版本存在安全漏洞，该漏洞源于链接解析不当，可能导致符号链接攻击和使用恶意文件。

CVSS 7.3 · High EPSS 0.20% · P9

Affected Version Matrix 3

VendorProduct Version RangeStatus
Qt Qt ≤ 5.15.18 affected
6.0.0≤ 6.5.8 affected
6.6.0≤ 6.8.1 affected
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I. Basic Information for CVE-2025-4211

Vulnerability Information
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Vulnerability Title
Improper Link Resolution Before File Access in QFileSystemEngine on Windows
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Link Resolution Before File Access ('Link Following') vulnerability in QFileSystemEngine in the Qt corelib module on Windows which potentially allows Symlink Attacks and the use of Malicious Files. Issue originates from CVE-2024-38081. The vulnerability arises from the use of the GetTempPath API, which can be exploited by attackers to manipulate temporary file paths, potentially leading to unauthorized access and privilege escalation. The affected public API in the Qt Framework is QDir::tempPath() and anything that uses it, such as QStandardPaths with TempLocation, QTemporaryDir, and QTemporaryFile. This issue affects all version of Qt up to and including 5.15.18, from 6.0.0 through 6.5.8, from 6.6.0 through 6.8.1. It is fixed in Qt 5.15.19, Qt 6.5.9, Qt 6.8.2, 6.9.0
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:P
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Qt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Qt是Qt开源的一个跨平台的应用程序开发框架。 Qt 5.15.18及之前版本、6.0.0至6.5.8版本和6.6.0至6.8.1版本存在安全漏洞，该漏洞源于链接解析不当，可能导致符号链接攻击和使用恶意文件。
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
Qt Qt 0 ~ 5.15.18 -

II. Public POCs for CVE-2025-4211

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III. Intelligence Information for CVE-2025-4211

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IV. Related Vulnerabilities

Same product: Qt
Same vendor: Qt
Same weakness: CWE-59

V. Comments for CVE-2025-4211

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