What is CVE-2024-0643?

CVE-2024-0643 is a critical-severity vulnerability in Cires21 C21 Live Encoder And Mosaic, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2024-01-17.

How severe is CVE-2024-0643?

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

Arbitrary file upload in Cires21 C21 Live Encoder And Mosaic

CVE-2024-0643

Unrestricted upload of dangerous file types in the C21 Live Encoder and Live Mosaic product, version 5.3. This vulnerability allows a remote attacker to upload different file extensions without any restrictions, resulting in a full system compromise.

Vulnerability class: Unrestricted File Upload

Published 2024-01-17 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.007 (50.1th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Cires21 C21 Live Encoder And Mosaic — versions 5.3
Cires21 Live Encoder — versions 5.3

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-cires21-pro… (Third Party Advisory)

Frequently asked questions

What is CVE-2024-0643?: CVE-2024-0643 is a critical-severity vulnerability in Cires21 C21 Live Encoder And Mosaic, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2024-01-17.
How severe is CVE-2024-0643?: Critical severity. CVSS v3 base score is 10.0 out of 10.