CVE-2026-45591 (GCVE-0-2026-45591)
Vulnerability from cvelistv5
Published
2026-06-09 17:05
Modified
2026-06-09 21:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Summary
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
References
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|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | .NET 10.0 |
Version: 10.0.0 < 10.0.9 |
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{
"containers": {
"cna": {
"affected": [
{
"product": ".NET 10.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.9",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"product": ".NET 8.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "8.0.28",
"status": "affected",
"version": "8.0.0",
"versionType": "custom"
}
]
},
{
"product": ".NET 9.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "9.0.17",
"status": "affected",
"version": "9.0.0",
"versionType": "custom"
}
]
},
{
"product": "ASP.NET Core 10.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.9",
"status": "affected",
"version": "10.0",
"versionType": "custom"
}
]
},
{
"product": "ASP.NET Core 8.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "8.0.28",
"status": "affected",
"version": "8.0",
"versionType": "custom"
}
]
},
{
"product": "ASP.NET Core 9.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "9.0.17",
"status": "affected",
"version": "9.0",
"versionType": "custom"
}
]
},
{
"product": "Microsoft Visual Studio 2026 version 18.6",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "18.6.3",
"status": "affected",
"version": "18.6.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*",
"versionEndExcluding": "18.6.3",
"versionStartIncluding": "18.6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.9",
"versionStartIncluding": "10.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.9",
"versionStartIncluding": "10.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.0.28",
"versionStartIncluding": "8.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.0.28",
"versionStartIncluding": "8.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"versionEndExcluding": "9.0.17",
"versionStartIncluding": "9.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
"versionEndExcluding": "9.0.17",
"versionStartIncluding": "9.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-06-09T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-09T21:50:43.635Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "ASP.NET Core Denial of Service Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591"
}
],
"title": "ASP.NET Core Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-45591",
"datePublished": "2026-06-09T17:05:29.575Z",
"dateReserved": "2026-05-12T19:55:45.730Z",
"dateUpdated": "2026-06-09T21:50:43.635Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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