KEV Entry

CVE-2021-36955

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-36955

2021-11-03 01:00 CET

Timestamps

2021-11-03

2021-11-03

Scope

Windows Common Log File System Driver Elevation of Privilege Vulnerability | Affected: Microsoft / Windows 10 Version 1507, Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 1909, Windows 10 Version 2004, Windows 10 Version 20H2, Windows 10 Version 21H1, Windows 7, Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server version 2004, Windows Server version 20H2 | CVSS: 7.8 (HIGH) | EPSS: 0.04037 | Used in malware: yes | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-36955', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-36955'}
  • {'id': 'GHSA-G26F-6MX8-J24W', 'url': 'https://github.com/advisories/GHSA-G26F-6MX8-J24W'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-36955'}

f1b24ae5-a2ca-4499-acb0-3ea8cd1eb2f7

Previdian
caeb2787-0d58-4236-9039-7c86c3e566f3

2026-10-02 09:10 CEST

2026-10-02 09:10 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian confirmed_compromise 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2021-36955",
  "cvss_estimated": false,
  "cvss_score": 7.8,
  "cvss_severity": "HIGH",
  "epss_percentile": 0.90294,
  "epss_score": 0.04037,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": "GHSA-G26F-6MX8-J24W",
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "Windows 10 Version 1507, Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 1909, Windows 10 Version 2004, Windows 10 Version 20H2, Windows 10 Version 21H1, Windows 7, Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server version 2004, Windows Server version 20H2",
  "title": "Windows Common Log File System Driver Elevation of Privilege Vulnerability",
  "used_in_malware": "yes",
  "vendor": "Microsoft",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-36955"
}
 -
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