How severe is CVE-2025-67288?

CVE-2025-67288 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-67288 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67288?

CVE-2025-67288 affects Umbraco Umbraco Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-67288?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-67288 have an EU (EUVD) identifier?

Yes. CVE-2025-67288 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204737.

When was CVE-2025-67288 published?

CVE-2025-67288 was published on 2025-12-22 and last updated on 2026-07-05.

CVE-2025-67288

CVE-2025-67288 is a critical-severity vulnerability in Umbraco Umbraco Cms with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204737
Weakness: CWE-434
Affected product: Umbraco Umbraco Cms
Published: 2025-12-22
Last modified: 2026-07-05

Description

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.

Frequently asked questions

What is 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 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.
How severe is CVE-2025-67288?: CVE-2025-67288 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-67288 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67288?: CVE-2025-67288 affects Umbraco Umbraco Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-67288?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-67288 have an EU (EUVD) identifier?: Yes. CVE-2025-67288 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204737.
When was CVE-2025-67288 published?: CVE-2025-67288 was published on 2025-12-22 and last updated on 2026-07-05.

References

https://github.com/vuquyen03/CVE/tree/main/CVE-2025-67288

EU advisories (EUVD)

http://umbraco.com

Affected products (1)

cpe:2.3:a:umbraco:umbraco_cms:16.3.3:*:*:*:*:*:*:*

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