CVE-2021-41609: SQL injection in the ID parameter of the UploadedImageDisplay.aspx endpoint of SelectSurvey.NET before 5.052.0

Q: How do I fix CVE-2021-41609?

selectsurvey.net: upgrade to 5.052.000. Exact commands for each OS are on this page.

Q: Is CVE-2021-41609 being exploited?

CVE-2021-41609 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-41609 affect?

CVE-2021-41609 affects selectsurvey.net. Severity is critical (CVSS 9.8). 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

Q: How urgent is CVE-2021-41609?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-41609 is a critical-severity flaw (CVSS 9.8) affecting selectsurvey.net. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-89
Published	2022-01-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: classapps

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-01-28 19:15 UTCPublished CVE record published
2026-06-17 04:08 UTCUpdated Record last modified

classapps selectsurvey.net UPGRADE

Affected: < 5.052.000

Fixed in: 5.052.000

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy selectsurvey.net || rpm -q selectsurvey.net || selectsurvey.net --version

2. UPGRADE to 5.052.000 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade selectsurvey.net

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade selectsurvey.net

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-41609?

selectsurvey.net: upgrade to 5.052.000. Exact commands for each OS are on this page.

Is CVE-2021-41609 being exploited?

CVE-2021-41609 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-41609 affect?

CVE-2021-41609 affects selectsurvey.net. Severity is critical (CVSS 9.8). 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

How urgent is CVE-2021-41609?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-41608 HIGH 7.5 UPGRADE A file disclosure vulnerability in the UploadedImageDisplay.aspx endpoint of SelectSurvey.NET before 5.052.000

References

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