What is CVE-2020-14213?

CVE-2020-14213 is a medium-severity vulnerability in Zammad, classified under Missing Authorization. CVSS score: 5.4/10. Published 2020-06-16.

How severe is CVE-2020-14213?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Zammad

CVE-2020-14213

In Zammad before 3.3.1, a Customer has ticket access that should only be available to an Agent (e.g., read internal data, split, or merge).

Vulnerability class: Broken Access Control

Published 2020-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Zammad

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

zammad.com/news/security-advisory-zaa-2020-13 (Vendor Advisory)
github.com/zammad/zammad/commit/6e56aee25439b7a3211a6704a9d60453ad623ae4 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-14213?: CVE-2020-14213 is a medium-severity vulnerability in Zammad, classified under Missing Authorization. CVSS score: 5.4/10. Published 2020-06-16.
How severe is CVE-2020-14213?: Medium severity. CVSS v3 base score is 5.4 out of 10.