What is CVE-2021-42675?

CVE-2021-42675 is a critical-severity vulnerability in Kreado Kreasfero, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-06-14.

How severe is CVE-2021-42675?

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

Arbitrary file upload in Kreado Kreasfero

CVE-2021-42675

Kreado Kreasfero 1.5 does not properly sanitize uploaded files to the media directory. One can upload a malicious PHP file and obtain remote code execution.

Vulnerability class: Unrestricted File Upload

Published 2022-06-14 · last modified 2026-07-09.

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.

EPSS exploit prediction

EPSS: 0.024 (83.4th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

Kreado Kreasfero — versions 1.5

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
twitter.com/1ofThegutHakrs/status/1536246485188128768 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-42675?: CVE-2021-42675 is a critical-severity vulnerability in Kreado Kreasfero, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-06-14.
How severe is CVE-2021-42675?: Critical severity. CVSS v3 base score is 9.8 out of 10.