Auth bypass in Expresstech Systems Quiz And Survey Master

CVE-2026-25324

Authorization Bypass Through User-Controlled Key vulnerability in ExpressTech Systems Quiz And Survey Master quiz-master-next allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Quiz And Survey Master: from n/a through <= 10.3.4.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.4% 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-2026-25324: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-25324?
CVE-2026-25324 is a medium-severity vulnerability in Expresstech Systems Quiz And Survey Master, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-02-19.
How severe is CVE-2026-25324?
Medium severity. CVSS v3 base score is 5.3 out of 10.