Checkbox Checkbox Survey
YES - ON THE CISA KEV LIST
CVE-2021-27852
Checkbox Survey Deserialization of Untrusted Data Vulnerability
overdue since 2022-05-02
Checkbox: 1 entries (0.1% of all KEV entries are from this vendor); 0 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute arbitrary code.
Required action (CISA)
Versions 6 and earlier for this product are end-of-life and must be removed from agency networks. Versions 7 and later are not considered vulnerable.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-27852
References
Other KEV entries for this vendor: Checkbox
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