CVE-2021-41609

Name: CVE-2021-41609
Creator: NVD / NIST
Published: 2022-01-28T19:15:07.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.14%

Last modified Jun 17, 2026

CVE-2021-41609 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. SQL injection in the ID parameter of the UploadedImageDisplay.aspx endpoint of SelectSurvey.NET before 5.052.000 allows a remote, unauthenticated attacker to retrieve data from the application's backend database via boolean-based blind and UNION injection.. EPSS estimates a 2.14% chance of exploitation in the next 30 days.

Description

SQL injection in the ID parameter of the UploadedImageDisplay.aspx endpoint of SelectSurvey.NET before 5.052.000 allows a remote, unauthenticated attacker to retrieve data from the application's backend database via boolean-based blind and UNION injection.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.14%

79.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Classapps	Selectsurvey.Net	< 5.052.000

References

https://www.classapps.com/product_ssv5.aspxProduct, Vendor Advisory
https://www.optiv.com/insights/source-zero/blog/classapps-inc-selectsurveynet-v50-vulnerabilities-disclosureExploit, Mitigation, Third Party Advisory
https://www.classapps.com/product_ssv5.aspxProduct, Vendor Advisory
https://www.optiv.com/insights/source-zero/blog/classapps-inc-selectsurveynet-v50-vulnerabilities-disclosureExploit, Mitigation, Third Party Advisory

Timeline

Published: Jan 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41609?

How severe is CVE-2021-41609?

CVE-2021-41609 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.14% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41609?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41609?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST