What is CVE-2021-33224?

CVE-2021-33224 is a critical-severity vulnerability in Umbraco Umbraco_forms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-02-24.

How severe is CVE-2021-33224?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-33224 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Umbraco Umbraco_forms

CVE-2021-33224

File upload vulnerability in Umbraco Forms v.8.7.0 allows unauthenticated attackers to execute arbitrary code via a crafted web.config and asp file.

Vulnerability class: Unrestricted File Upload

EPSS: 0.007 (49.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Umbraco Umbraco_forms — versions 8.7.0
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

cve@mitre.org (Product)
cve@mitre.org (Release Notes)

Frequently asked questions

What is CVE-2021-33224?: CVE-2021-33224 is a critical-severity vulnerability in Umbraco Umbraco_forms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-02-24.
How severe is CVE-2021-33224?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-33224 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.