KEV Entry

CVE-2021-27852

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-27852

2022-04-11 00:00 UTC

Timestamps

2022-04-11

2022-04-11

Scope

KEVIntel entry: Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute... | Affected: Checkbox / Survey | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-27852', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-27852'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2021-27852'}

e84f5cfc-3c01-41e0-8ce6-ebeb9eea2bd5

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-23 14:05 UTC

2026-06-23 14:05 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel successful_exploitation 0.70
View details 
{
  "added_date": "2022-04-11T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": null,
  "epss_score": null,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "Survey",
  "title": "Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute...",
  "used_in_malware": "unknown",
  "vendor": "Checkbox"
}
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