CVE-2026-32202 (GCVE-0-2026-32202)
Vulnerability from cvelistv5 – Published: 2026-04-14 16:57 – Updated: 2026-08-14 16:31Title
Windows Shell Spoofing Vulnerability
Summary
Protection mechanism failure in Windows Shell allows an unauthorized attacker to perform spoofing over a network.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-27 00:00 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
| https://www.vicarius.io/vsociety/posts/cve-2026-3… | |
| https://www.vicarius.io/vsociety/posts/cve-2026-3… |
Impacted products
20 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9339
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9020
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7548
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7548
(custom)
|
guessed | |
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7376
(custom)
|
guessed | |
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7376
(custom)
|
guessed | |
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.8875
(custom)
|
guessed | |
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.8875
(custom)
|
guessed | |
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2525
(custom)
|
guessed | |
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26226
(custom)
|
guessed | |
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26226
(custom)
|
guessed | |
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23291
(custom)
|
guessed | |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23291
(custom)
|
guessed | |
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9339
(custom)
|
guessed | |
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9339
(custom)
|
guessed | |
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9020
(custom)
|
guessed | |
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9020
(custom)
|
guessed | |
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5386
(custom)
|
guessed | |
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33158
(custom)
|
guessed | |
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33158
(custom)
|
guessed |
Date Public
2026-04-14 14:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: fb193ad3-86de-4b69-906c-aed8cf08137f
Exploited: Yes
Timestamps
First Seen: 2026-04-28
Asserted: 2026-04-28
Scope
Notes: KEV entry: Microsoft Windows Protection Mechanism Failure Vulnerability | Affected: Microsoft / Windows | Description: Microsoft Windows Shell contains a protection mechanism failure vulnerability that allows an unauthorized attacker to perform spoofing over a network. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-05-12 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-32202 ; https://nvd.nist.gov/vuln/detail/CVE-2026-32202
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-693 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Windows |
| Due Date | 2026-05-12 |
| Date Added | 2026-04-28 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Windows Protection Mechanism Failure Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-04-28 18:00 UTC
| Updated: 2026-04-28 18:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 51e6fa4f-6d2d-4115-bd66-5870b74a2a52
Exploited: Yes
Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: Windows Shell Spoofing Vulnerability | Affected: Microsoft / Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows 11 Version 25H2, Windows 11 version 26H1, 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 2022, 23H2 Edition (Server Core installation), Windows Server 2025, Windows Server 2025 (Server Core installation) | CVSS: 4.3 (MEDIUM) | EPSS: 0.19985 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Windows Shell Spoofing Vulnerability |
| Vendor | Microsoft |
| Product | Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows 11 Version 25H2, Windows 11 version 26H1, 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 2022, 23H2 Edition (Server Core installation), Windows Server 2025, Windows Server 2025 (Server Core installation) |
| Added Date | 2026-06-01T13:25:49.558Z |
| Cvss Score | 4.3 |
| Epss Score | 0.19985 |
| Cvss Severity | MEDIUM |
| Epss Percentile | 0.97099 |
| Used In Malware | unknown |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:03 UTC
| Updated: 2026-07-10 06:14 UTC
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"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Windows Shell Spoofing Vulnerability",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32202.json",
"version": "3"
},
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\"cweId\": \"CWE-693\", \"description\": \"CWE-693: Protection Mechanism Failure\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.17763.8644\", \"versionStartIncluding\": \"10.0.17763.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.17763.8644\", \"versionStartIncluding\": \"10.0.17763.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.17763.8644\", \"versionStartIncluding\": \"10.0.17763.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.20348.5020\", \"versionStartIncluding\": \"10.0.20348.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.19044.7184\", \"versionStartIncluding\": \"10.0.19044.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.19045.7184\", \"versionStartIncluding\": \"10.0.19045.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.26100.32690\", \"versionStartIncluding\": \"10.0.26100.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.26200.8246\", \"versionStartIncluding\": \"10.0.26200.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.22631.6936\", \"versionStartIncluding\": \"10.0.22631.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.22631.6936\", \"versionStartIncluding\": \"10.0.22631.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_23h2:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.25398.2274\", \"versionStartIncluding\": \"10.0.25398.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.26100.8246\", \"versionStartIncluding\": \"10.0.26100.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.26100.32690\", \"versionStartIncluding\": \"10.0.26100.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.14393.9060\", \"versionStartIncluding\": \"10.0.14393.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.14393.9060\", \"versionStartIncluding\": \"10.0.14393.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.14393.9060\", \"versionStartIncluding\": \"10.0.14393.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2.9200.26026\", \"versionStartIncluding\": \"6.2.9200.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2.9200.26026\", \"versionStartIncluding\": \"6.2.9200.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3.9600.23132\", \"versionStartIncluding\": \"6.3.9600.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3.9600.23132\", \"versionStartIncluding\": \"6.3.9600.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.28000.1836\", \"versionStartIncluding\": \"10.0.28000.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2026-06-19T16:08:02.338Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-32202\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-19T16:08:02.338Z\", \"dateReserved\": \"2026-03-11T01:49:58.658Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2026-04-14T16:57:36.996Z\", \"assignerShortName\": \"microsoft\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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