Arbitrary file upload in Kentico Xperience - CVE-2025-2749
Published: April 24, 2026
Vulnerability identifier: #VU127607
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2025-2749
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Kentico
Affected software:
Kentico Xperience
Kentico Xperience
Detailed vulnerability description
The vulnerability allows a remote user to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file extension when uploading files. A remote authenticated user can upload a malicious file onto the server into arbitrary location and compromise the affected system.
How to mitigate CVE-2025-2749
Install update from vendor's website.