How severe is CVE-2021-41609?

CVE-2021-41609 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41609?

CVE-2021-41609 affects Classapps Selectsurvey.net. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41609?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-41609 published?

CVE-2021-41609 was published on 2022-01-28 and last updated on 2026-06-17.

CVE-2021-41609

CVE-2021-41609 is a critical-severity vulnerability in Classapps Selectsurvey.net with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Classapps Selectsurvey.net
Published: 2022-01-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-41609?: 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.
How severe is CVE-2021-41609?: CVE-2021-41609 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41609?: CVE-2021-41609 affects Classapps Selectsurvey.net. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-41609 published?: CVE-2021-41609 was published on 2022-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:classapps:selectsurvey.net:*:*:*:*:*:*:*:*

More vulnerabilities in Classapps Selectsurvey.net

CVE-2021-41608 — High (CVSS 7.5): A file disclosure vulnerability in the UploadedImageDisplay.aspx endpoint of SelectSurvey.NET before 5.052.000 allows a…
CVE-2014-6030 — Medium (CVSS 6.5): Multiple SQL injection vulnerabilities in ClassApps SelectSurvey.NET before 4.125.002 allow (1) remote attackers to…

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