KEV Entry

CVE-2021-33742

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-33742

2021-11-03 00:00 UTC

Timestamps

2021-11-03

2021-11-03

Scope

KEVIntel entry: Windows MSHTML Platform Remote Code Execution Vulnerability | Affected: Microsoft / Windows 10 Version 1809, Windows Server 2019, Windows 10 Version 1909, Windows 10 Version 21H1, Windows 10 Version 2004, Windows 10 Version 20H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows 7, Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2012, Windows Server 2012 R2 | CVSS: 7.5 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-33742', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-33742'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2021-33742'}

237007b4-dc26-45db-85cf-526a8531d040

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 successful_exploitation 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cvss_score": 7.5,
  "cvss_severity": "HIGH",
  "epss_percentile": null,
  "epss_score": null,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "Windows 10 Version 1809, Windows Server 2019, Windows 10 Version 1909, Windows 10 Version 21H1, Windows 10 Version 2004, Windows 10 Version 20H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows 7, Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 Service Pack 2, Windows Server 2008  Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2012, Windows Server 2012 R2",
  "title": "Windows MSHTML Platform Remote Code Execution Vulnerability",
  "used_in_malware": "unknown",
  "vendor": "Microsoft"
}
 -
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