CVE-2021-36898Network attack vector

Administrator-level database compromise via undisclosed query handling

Published Oct 28, 2022 · Updated Apr 28, 2026

SQL injection in ExpressTech Systems Quiz and Survey Master 7.3.4 and earlier allows remote authenticated users to read and alter database data. The CNA and referenced vendor advisory do not identify the affected request parameter, function, or query construction error. Administrative WordPress privileges are required, and the public record gives no more specific consequence than database compromise.

CVSS severity9.1
Critical
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

SQL injection in ExpressTech Systems Quiz and Survey Master 7.3.4 and earlier allows remote authenticated users to read and alter database data. The CNA and referenced vendor advisory do not identify the affected request parameter, function, or query construction error. Administrative WordPress privileges are required, and the public record gives no more specific consequence than database compromise.

The record

CVE
CVE-2021-36898
Published
Oct 28, 2022
Updated
Apr 28, 2026
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-89
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 7.3.4 <=7.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=<= 7.3.4 <=7.3.4

Published CVSS scores

9.1PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo