CVE-2025-33071 (GCVE-0-2025-33071)
Vulnerability from cvelistv5 – Published: 2025-06-10 17:02 – Updated: 2026-02-26 17:50
VLAI
EPSS
VEX
Title
Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerability
Summary
Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-11 04:01 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
12 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.25522
(custom)
|
guessed | |
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.25522
(custom)
|
guessed | |
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.22620
(custom)
|
guessed | |
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.22620
(custom)
|
guessed | |
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.8148
(custom)
|
guessed | |
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.8148
(custom)
|
guessed | |
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.7434
(custom)
|
guessed | |
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.7434
(custom)
|
guessed | |
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.3807
(custom)
|
guessed | |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.1665
(custom)
|
guessed | |
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.4349
(custom)
|
guessed | |
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.4349
(custom)
|
guessed |
Date Public
2025-06-10 07:00
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\"Microsoft\", \"product\": \"Windows Server 2022\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.20348.0\", \"lessThan\": \"10.0.20348.3807\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}, {\"vendor\": \"Microsoft\", \"product\": \"Windows Server 2022, 23H2 Edition (Server Core installation)\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.25398.0\", \"lessThan\": \"10.0.25398.1665\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}, {\"vendor\": \"Microsoft\", \"product\": \"Windows Server 2025\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.26100.0\", \"lessThan\": \"10.0.26100.4349\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}, {\"vendor\": \"Microsoft\", \"product\": \"Windows Server 2025 (Server Core installation)\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.26100.0\", \"lessThan\": \"10.0.26100.4349\", \"versionType\": \"custom\"}], \"platforms\": [\"x64-based Systems\"]}], \"datePublic\": \"2025-06-10T07:00:00.000Z\", \"references\": [{\"url\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33071\", \"name\": \"Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerability\", \"tags\": [\"vendor-advisory\", \"patch\"]}], \"descriptions\": [{\"lang\": \"en-US\", \"value\": \"Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416: Use After Free\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.17763.7434\", \"versionStartIncluding\": \"10.0.17763.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.17763.7434\", \"versionStartIncluding\": \"10.0.17763.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.20348.3807\", \"versionStartIncluding\": \"10.0.20348.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.26100.4349\", \"versionStartIncluding\": \"10.0.26100.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_23h2:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.25398.1665\", \"versionStartIncluding\": \"10.0.25398.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.26100.4349\", \"versionStartIncluding\": \"10.0.26100.0\"}, {\"criteria\": \"cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": 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\"versionStartIncluding\": \"6.3.9600.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2026-02-20T16:00:52.818Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2025-33071\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-20T16:00:52.818Z\", \"dateReserved\": \"2025-04-15T17:46:28.202Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2025-06-10T17:02:26.146Z\", \"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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