Windows Certificates
CVE-2022-21836 — Windows Certificate Spoofing Vulnerability
Executive Summary
None
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.0
EPSS Score
0.00704
probability of exploitation in the next 30 days
0.48403 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
28 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 5009585 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 for x64-based Systems | 5009585 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 5009546 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1607 for x64-based Systems | 5009546 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 5009557 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 5009557 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1809 for x64-based Systems | 5009557 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1909 for 32-bit Systems | 5009545 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1909 for ARM64-based Systems | 5009545 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 1909 for x64-based Systems | 5009545 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 20H2 for 32-bit Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 20H2 for ARM64-based Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 21H1 for 32-bit Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 21H1 for ARM64-based Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 21H1 for x64-based Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 21H2 for 32-bit Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 21H2 for ARM64-based Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 10 Version 21H2 for x64-based Systems | 5009543 (Security Update) |
Important | Spoofing | Yes |
| Windows 11 version 21H2 for ARM64-based Systems | 5009566 (Security Update) |
Important | Spoofing | Yes |
| Windows 11 version 21H2 for x64-based Systems | 5009566 (Security Update) |
Important | Spoofing | Yes |
| Windows 7 for 32-bit Systems Service Pack 1 5009610 (Monthly Rollup) 5009621 (Security Only) Important Spoofing 5008244 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.1.7601.25829 Yes 5009610 5009621 Windows 7 for x64-based Systems Service Pack 1 5009610 (Monthly Rollup) 5009621 (Security Only) Important Spoofing 5008244 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.1.7601.25829 Yes 5009610 5009621 Windows 8.1 for 32-bit systems 5009624 (Monthly Rollup) 5009595 (Security Only) Important Spoofing 5008263 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.3.9600.20246 Yes 5009624 5009595 Windows 8.1 for x64-based systems 5009624 (Monthly Rollup) 5009595 (Security Only) Important Spoofing 5008263 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.3.9600.20246 Yes 5009624 5009595 Windows RT 8.1 | 5009624 (Monthly Rollup) |
Important | Spoofing | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 5009627 (Monthly Rollup) 5009601 (Security Only) Important Spoofing 5008274 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.0.6003.21349 Yes 5009627 5009601 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5009627 (Monthly Rollup) 5009601 (Security Only) Important Spoofing 5008274 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.0.6003.21349 Yes 5009627 5009601 Windows Server 2008 for x64-based Systems Service Pack 2 5009627 (Monthly Rollup) 5009601 (Security Only) Important Spoofing 5008274 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.0.6003.21349 Yes 5009627 5009601 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5009627 (Monthly Rollup) 5009601 (Security Only) Important Spoofing 5008274 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.0.6003.21349 Yes 5009627 5009601 Windows Server 2008 R2 for x64-based Systems Service Pack 1 5009610 (Monthly Rollup) 5009621 (Security Only) Important Spoofing 5008244 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.1.7601.25829 Yes 5009610 5009621 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5009610 (Monthly Rollup) 5009621 (Security Only) Important Spoofing 5008244 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.1.7601.25829 Yes 5009610 5009621 Windows Server 2012 5009586 (Monthly Rollup) 5009619 (Security Only) Important Spoofing 5008277 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.2.9200.23584 Yes 5009586 5009619 Windows Server 2012 (Server Core installation) 5009586 (Monthly Rollup) 5009619 (Security Only) Important Spoofing 5008277 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.2.9200.23584 Yes 5009586 5009619 Windows Server 2012 R2 5009624 (Monthly Rollup) 5009595 (Security Only) Important Spoofing 5008263 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.3.9600.20246 Yes 5009624 5009595 Windows Server 2012 R2 (Server Core installation) 5009624 (Monthly Rollup) 5009595 (Security Only) Important Spoofing 5008263 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C 6.3.9600.20246 Yes 5009624 5009595 Windows Server 2016 | 5009546 (Security Update) |
Important | Spoofing | Yes |
| Windows Server 2016 (Server Core installation) | 5009546 (Security Update) |
Important | Spoofing | Yes |
| Windows Server 2019 | 5009557 (Security Update) |
Important | Spoofing | Yes |
| Windows Server 2019 (Server Core installation) | 5009557 (Security Update) |
Important | Spoofing | Yes |
| Windows Server 2022 | 5009555 (Security Update) |
Important | Spoofing | Yes |
| Windows Server 2022 (Server Core installation) | 5009555 (Security Update) |
Important | Spoofing | Yes |
| Windows Server, version 20H2 (Server Core Installation) | 5009543 (Security Update) |
Important | Spoofing | Yes |
Patches
8 patches
| Article | Type | Restart |
|---|---|---|
5009585 |
Security Update | Yes |
5009546 |
Security Update | Yes |
5009557 |
Security Update | Yes |
5009545 |
Security Update | Yes |
5009543 |
Security Update | Yes |
5009566 |
Security Update | Yes |
5009624 |
Monthly Rollup | Yes |
5009555 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Mickey Shkatov
References
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