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CVE-2025-4538— kkFileView fileUpload unrestricted upload

Quick assessment

Affected
n/a kkFileView
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.

kkFileView是凯京科技（kekingcn）开源的一个基于 Spring-Boot 的通用文件在线预览项目。 kkFileView 4.4.0版本存在代码问题漏洞，该漏洞源于对文件/fileUpload中参数File的错误操作导致任意文件上传。

CVSS 6.3 · Medium EPSS 0.44% · P38
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I. Basic Information for CVE-2025-4538

Vulnerability Information
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Vulnerability Title
kkFileView fileUpload unrestricted upload
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in kkFileView 4.4.0. It has been classified as critical. This affects an unknown part of the file /fileUpload. The manipulation of the argument File leads to unrestricted upload. It is possible to initiate the attack remotely. The exploit has been disclosed to the public 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:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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
Vulnerability Title
kkFileView 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
kkFileView是凯京科技（kekingcn）开源的一个基于 Spring-Boot 的通用文件在线预览项目。 kkFileView 4.4.0版本存在代码问题漏洞，该漏洞源于对文件/fileUpload中参数File的错误操作导致任意文件上传。
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
- kkFileView 4.4.0 -

II. Public POCs for CVE-2025-4538

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III. Intelligence Information for CVE-2025-4538

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Same Patch Batch · n/a · 2025-05-11 · 5 CVEs total

CVE-2025-4541 6.3 MEDIUM LmxCMS POST Request ZtAction.class.php manageZt sql injection
CVE-2025-4552 5.4 MEDIUM ContiNew Admin password unverified password change
CVE-2025-4551 3.5 LOW ContiNew Admin file cross site scripting
CVE-2025-4533 2.7 LOW JeecgBoot Document Library Upload zip unzipFile resource consumption

IV. Related Vulnerabilities

Same product: kkFileView
Same vendor: n/a
Same weakness: CWE-434