What’s Vulnerable › Vulnerabilities

CVE-2021-41609

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-28 · updated 2026-06-17
• Weakness: CWE-89

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.

Affected products

• Classapps Selectsurvey.Net: before 5.052.000 — fixed in 5.052.000

How to fix

Upgrade to a fixed version: Classapps Selectsurvey.Net 5.052.000. Check the vendor advisory for mitigations.

References

• https://www.classapps.com/product_ssv5.aspx
• https://www.optiv.com/insights/source-zero/blog/classapps-inc-selectsurveynet-v50-vulnerabilities-disclosure
• https://www.classapps.com/product_ssv5.aspx
• https://www.optiv.com/insights/source-zero/blog/classapps-inc-selectsurveynet-v50-vulnerabilities-disclosure

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