What is CVE-2025-67288?

CVE-2025-67288 is a critical-severity vulnerability in Umbraco Umbraco_cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2025-12-22.

How severe is CVE-2025-67288?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Arbitrary file upload in Umbraco Umbraco_cms

CVE-2025-67288

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 th…

Vulnerability class: Unrestricted File Upload

EPSS: 0.005 (39.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Umbraco Umbraco_cms — versions 16.3.3
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-67288?: CVE-2025-67288 is a critical-severity vulnerability in Umbraco Umbraco_cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2025-12-22.
How severe is CVE-2025-67288?: Critical severity. CVSS v3 base score is 10.0 out of 10.