CVE-2026-33096 (GCVE-0-2026-33096)
Vulnerability from cvelistv5 – Published: 2026-04-14 16:57 – Updated: 2026-08-14 16:30
VLAI
EPSS
VEX
Title
HTTP.sys Denial of Service Vulnerability
Summary
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-15 10:41 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.6936
(custom)
|
guessed | |
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.6936
(custom)
|
guessed | |
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.8246
(custom)
|
guessed | |
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.8246
(custom)
|
guessed | |
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.1836
(custom)
|
guessed | |
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5020
(custom)
|
guessed | |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.2274
(custom)
|
guessed | |
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.32690
(custom)
|
guessed | |
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.32690
(custom)
|
guessed |
Date Public
2026-04-14 14:00
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\"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\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2026-06-19T16:08:08.771Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-33096\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-19T16:08:08.771Z\", \"dateReserved\": \"2026-03-17T20:15:23.718Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2026-04-14T16:57:45.953Z\", \"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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