CVE-2021-41609Public exploitNetwork attack vector

Database read and write via injectable ID

Published Jan 28, 2022 · Updated Aug 4, 2024

SQL injection in UploadedImageDisplay.aspx in ClassApps SelectSurvey.NET before 5.052.000 allows remote attackers to read and modify database data. The endpoint incorporates its unauthenticated ID parameter into a database query, so boolean conditions alter responses and UNION clauses execute within the backend. No account is required; successful exploitation exposes application and co-hosted database data to reading and modification.

CVSS severity9.8
Critical
EPSS probability2.14%
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 UploadedImageDisplay.aspx in ClassApps SelectSurvey.NET before 5.052.000 allows remote attackers to read and modify database data. The endpoint incorporates its unauthenticated ID parameter into a database query, so boolean conditions alter responses and UNION clauses execute within the backend. No account is required; successful exploitation exposes application and co-hosted database data to reading and modification.

The record

CVE
CVE-2021-41609
Published
Jan 28, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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

Technologies

Your stack

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Your stack

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