What is CVE-2020-25267?

CVE-2020-25267 is a medium-severity vulnerability in Ilias, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-11-10.

How severe is CVE-2020-25267?

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

XSS in Ilias

CVE-2020-25267

An XSS issue exists in the question-pool file-upload preview feature in ILIAS 6.4.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-11-10 · 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:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.4% 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

Ilias — versions 6.4.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

medium.com/bugbountywriteup/exploiting-ilias-learning-management-system-4eda9e1… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-25267?: CVE-2020-25267 is a medium-severity vulnerability in Ilias, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-11-10.
How severe is CVE-2020-25267?: Medium severity. CVSS v3 base score is 5.4 out of 10.