CVE-2022-4033Network attack vector

Quiz submission manipulation via unchecked question identifiers

Published Nov 29, 2022 · Updated Apr 8, 2026

Improper input validation in ExpressTech Systems Quiz and Survey Master 8.0.4 and earlier allows remote attackers to alter quiz submissions. The quiz submission path accepts question[id] values without enforcing the intended numeric identifier, file path, or other question-type constraint. Unauthenticated access to a published quiz is sufficient, and the documented consequence is limited to integrity changes in submitted content.

CVSS severity5.3
Medium
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in ExpressTech Systems Quiz and Survey Master 8.0.4 and earlier allows remote attackers to alter quiz submissions. The quiz submission path accepts question[id] values without enforcing the intended numeric identifier, file path, or other question-type constraint. Unauthenticated access to a published quiz is sufficient, and the documented consequence is limited to integrity changes in submitted content.

The record

CVE
CVE-2022-4033
Published
Nov 29, 2022
Updated
Apr 8, 2026
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-20, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <=8.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=0 <=8.0.4

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1565.002Transmitted Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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