What is CVE-2021-20111?

CVE-2021-20111 is a medium-severity vulnerability in Tecnick Tcexam, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-30.

How severe is CVE-2021-20111?

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

XSS in Tecnick Tcexam

CVE-2021-20111

A stored cross-site scripting vulnerability exists in TCExam <= 14.8.1. Valid files uploaded via tce_filemanager.php with a filename beggining with a period will be rendered as text/html. An attacker with access to tce_filemanager.php could upload a malicious javascript payload which would be triggered when another user views the file.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-07-30 · 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 (47.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.2% 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

Tecnick Tcexam
Tcexam — versions 14.8.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.tenable.com/security/research/tra-2021-32 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-20111?: CVE-2021-20111 is a medium-severity vulnerability in Tecnick Tcexam, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-30.
How severe is CVE-2021-20111?: Medium severity. CVSS v3 base score is 5.4 out of 10.