CVE-2021-42333Network attack vector

Database disclosure and privilege escalation via learning-history parameters

Published Oct 15, 2021 · Updated Sep 16, 2024

SQL injection in EasyTest Online Learning Test Platform 1705 allows remote authenticated users to read the database and gain administrator access. The learning-history page passes attacker-controlled parameter content into database commands without neutralizing SQL syntax. A valid ordinary user account is required; successful exploitation exposes all database data and permits administrator-level access.

CVSS severity8.8
High
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in EasyTest Online Learning Test Platform 1705 allows remote authenticated users to read the database and gain administrator access. The learning-history page passes attacker-controlled parameter content into database commands without neutralizing SQL syntax. A valid ordinary user account is required; successful exploitation exposes all database data and permits administrator-level access.

The record

CVE
CVE-2021-42333
Published
Oct 15, 2021
Updated
Sep 16, 2024
Vendor
Huachu Digital Technology Limited Company
Product
EasyTest Online Learning Test Platform
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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=1705

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Huachu Digital Technology Limited Company · EasyTest Online Learning Test Platformversion=1705

Published CVSS scores

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

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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