CVE-2025-67288

CRITICAL10.0

An arbitrary file upload vulnerability in Umbraco CMS v16

Published Dec 22, 2025

Modified 1 weeks ago

Details

An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code by uploading a crafted PDF file. NOTE: this is disputed by the Supplier because the responsibility for file validation (as shown in the documentation) belongs to the system administrator who is implementing Umbraco CMS in their environment, not to Umbraco CMS itself, a related issue to CVE-2023-49279.

References

WEBhttp://umbraco.com WEBhttps://github.com/vuquyen03/CVE/tree/main/CVE-2025-67288 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2025-67288

CVSS Analysis

CVSS v3.1

10.0

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

ChangedS:C

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

10/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Ecosystems

Timeline

PublishedDec 22, 2025

ModifiedJan 8, 2026