CVE-2025-4538 kkFileView fileUpload unrestricted upload
Remote attackers can upload malicious files via the fileUpload endpoint in kkFileView, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-4538?
CVE-2025-4538 is a medium-severity vulnerability in kkFileView, published on 11 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-4538?
It affects 1 product.
Products include Keking Kkfileview.
How do I fix CVE-2025-4538?
No fix has been published for CVE-2025-4538 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-4538 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4538 exists.
Other vulnerabilities in kkFileView
Sources
Also known as GHSA-h26h-5ww8-xhfr.