What is CVE-2021-40324?

CVE-2021-40324 is a high-severity vulnerability in Cobbler Project, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.5/10. Published 2021-10-04.

How severe is CVE-2021-40324?

High severity. CVSS v3 base score is 7.5 out of 10.

Arbitrary file upload in Cobbler Project

CVE-2021-40324

Cobbler before 3.3.0 allows arbitrary file write operations via upload_log_data.

Vulnerability class: Unrestricted File Upload

Published 2021-10-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.686 (99.3th percentile), scored 2026-10-28.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.686 · newest: 0.686 · change: 0.000

Affected products

Cobbler Project

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

github.com/cobbler/cobbler/commit/d8f60bbf14a838c8c8a1dba98086b223e35fe70a (Patch, Third Party Advisory)
github.com/cobbler/cobbler/releases/tag/v3.3.0 (Product, Third Party Advisory)

Frequently asked questions

What is CVE-2021-40324?: CVE-2021-40324 is a high-severity vulnerability in Cobbler Project, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.5/10. Published 2021-10-04.
How severe is CVE-2021-40324?: High severity. CVSS v3 base score is 7.5 out of 10.