Kkfileview
CVE-2025-4538
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. EPSS exploitation probability: 0.30%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAIv1 – Mar 28, 2026
A vulnerability was found in kkFileView 4.4.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-284. 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. Affected products include: Keking Kkfileview.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
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.
Executive ViewAI
Organizations using A vulnerability should be aware of moderate risk from CVE-2025-4538, a improper access control vulnerability rated CVSS 5.3. Exploitation could compromise the security of affected deployments. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.
Affected Products (CPE)CVE.org
More in Kkfileview
View allkkFileView 4.0 is vulnerable to Server-side request forgery (SSRF) via controller\OnlinePreviewController.java. Rated cr
kkFileView v4.1.0 was discovered to contain a Server-Side Request Forgery (SSRF) via the component cn.keking.web.control
kkFileView v4.0.0 was discovered to contain an arbitrary file deletion vulnerability via the fileName parameter at /cont
kkFileView v4.3.0 is vulnerable to Incorrect Access Control. Rated medium severity (CVSS 6.1), this vulnerability is rem
A vulnerability, which was classified as problematic, has been found in kkFileView. Rated medium severity (CVSS 6.1), th
kkFileView v4.1.0 is vulnerable to Cross Site Scripting (XSS) via the parameter 'errorMsg.'. Rated medium severity (CVSS
kkFileView v4.1.0 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities via the urls and current
kkFileView v4.0.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the url parameter at /control
Server-side request forgery in kkFileView 4.2.0 and later lets remote, unauthenticated attackers make the server fetch a
Unauthenticated directory traversal in kkFileView 5.0.0 through 5.0.2 lets remote attackers create arbitrary directories
kkFileView 4.0 is vulnerable to Cross Site Scripting (XSS) via controller\ Filecontroller.java. Rated medium severity (C
Open redirect in kekingcn kkFileView builds up to and including 5.0.3 allows remote attackers to steer users to attacker
GitHub PoC
Exploit-DB