What is CVE-2020-5743?

CVE-2020-5743 is a medium-severity vulnerability in Tecnick Tcexam, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2020-05-07.

How severe is CVE-2020-5743?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Tecnick Tcexam

CVE-2020-5743

Improper Control of Resource Identifiers in TCExam 14.2.2 allows a remote, authenticated attacker to access test metadata for which they don't have permission.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2020-05-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Tecnick Tcexam — versions 14.2.2
Tcexam — versions 14.2.2

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

www.tenable.com/security/research/tra-2020-31 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-5743?: CVE-2020-5743 is a medium-severity vulnerability in Tecnick Tcexam, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2020-05-07.
How severe is CVE-2020-5743?: Medium severity. CVSS v3 base score is 4.3 out of 10.