Vulnerability in Open-Xchange Gmbh Ox Dovecot Ce

CVE-2026-40204

None None None No publicly available exploits are known.

Published · last modified .

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.002 (10.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-40204: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-40204?
CVE-2026-40204 is a low-severity vulnerability in Open-Xchange Gmbh Ox Dovecot Ce, classified under Improper Access Control. CVSS score: 3.1/10. Published 2026-08-28.
How severe is CVE-2026-40204?
Low severity. CVSS v3 base score is 3.1 out of 10.