KEV Entry

CVE-2021-42237

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-42237

2022-03-25 00:00 UTC

Timestamps

2022-03-25

2022-03-25

Scope

KEVIntel entry: Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve... | Affected: Sitecore / Sitecore XP | CVSS: 9.8 (CRITICAL) | Used in malware: yes | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-42237', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-42237'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2021-42237'}

223e3b40-5245-4033-b7c7-4837e25cdf6e

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-23 11:13 UTC

2026-06-23 11:13 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel confirmed_compromise 0.70
View details 
{
  "added_date": "2022-03-25T00:00:00.000Z",
  "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": "Sitecore XP",
  "title": "Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve...",
  "used_in_malware": "yes",
  "vendor": "Sitecore"
}
 -
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