CVE-2026-32178 (GCVE-0-2026-32178)
Vulnerability from cvelistv5 – Published: 2026-04-14 16:57 – Updated: 2026-05-12 17:38
VLAI
Title
.NET Spoofing Vulnerability
Summary
Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.
Severity
CWE
- CWE-138 - Improper Neutralization of Special Elements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | .NET 10.0 |
Affected:
10.0.0 , < 10.0.6
(custom)
|
|
| Microsoft | .NET 8.0 |
Affected:
8.0 , < 8.0.26
(custom)
|
|
| Microsoft | .NET 8.0 |
Affected:
8.0.0 , < 8.0.26
(custom)
|
|
| Microsoft | .NET 9.0 |
Affected:
9.0.0 , < 9.0.15
(custom)
|
|
| Microsoft | Microsoft Visual Studio 2022 version 17.12 |
Affected:
17.12.0 , < 17.12.19
(custom)
|
|
| Microsoft | Microsoft Visual Studio 2022 version 17.14 |
Affected:
17.14.0 , < 17.14.30
(custom)
|
Date Public
2026-04-14 14:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-32178",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-15T10:40:37.117716Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-15T10:43:57.251Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": ".NET 10.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10.0.6",
"status": "affected",
"version": "10.0.0",
"versionType": "custom"
}
]
},
{
"product": ".NET 8.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "8.0.26",
"status": "affected",
"version": "8.0",
"versionType": "custom"
}
]
},
{
"product": ".NET 8.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "8.0.26",
"status": "affected",
"version": "8.0.0",
"versionType": "custom"
}
]
},
{
"product": ".NET 9.0",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "9.0.15",
"status": "affected",
"version": "9.0.0",
"versionType": "custom"
}
]
},
{
"product": "Microsoft Visual Studio 2022 version 17.12",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "17.12.19",
"status": "affected",
"version": "17.12.0",
"versionType": "custom"
}
]
},
{
"product": "Microsoft Visual Studio 2022 version 17.14",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "17.14.30",
"status": "affected",
"version": "17.14.0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*",
"versionEndExcluding": "17.12.19",
"versionStartIncluding": "17.12.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*",
"versionEndExcluding": "17.14.30",
"versionStartIncluding": "17.14.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"versionEndExcluding": "10.0.6",
"versionStartIncluding": "10.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.0.26",
"versionStartIncluding": "8.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.0.26",
"versionStartIncluding": "8.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"versionEndExcluding": "9.0.15",
"versionStartIncluding": "9.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"datePublic": "2026-04-14T14:00:00.000Z",
"descriptions": [
{
"lang": "en-US",
"value": "Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing 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:H/I:N/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en-US",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-138",
"description": "CWE-138: Improper Neutralization of Special Elements",
"lang": "en-US",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T17:38:28.486Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": ".NET Spoofing Vulnerability",
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32178"
}
],
"title": ".NET Spoofing Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2026-32178",
"datePublished": "2026-04-14T16:57:31.355Z",
"dateReserved": "2026-03-11T00:26:53.425Z",
"dateUpdated": "2026-05-12T17:38:28.486Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-32178",
"date": "2026-05-25",
"epss": "0.00057",
"percentile": "0.17932"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-32178\",\"sourceIdentifier\":\"secure@microsoft.com\",\"published\":\"2026-04-14T18:17:20.260\",\"lastModified\":\"2026-05-07T19:41:12.257\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"secure@microsoft.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"secure@microsoft.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-138\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"10.0.0\",\"versionEndExcluding\":\"10.0.6\",\"matchCriteriaId\":\"CD89D801-933E-4D78-9187-D2CA94370FA0\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"387021A0-AF36-463C-A605-32EA7DAC172E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.0.0\",\"versionEndExcluding\":\"8.0.26\",\"matchCriteriaId\":\"CB15ABFB-047C-4B69-BD19-68D3EFEDCB78\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"387021A0-AF36-463C-A605-32EA7DAC172E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"9.0.0\",\"versionEndExcluding\":\"9.0.15\",\"matchCriteriaId\":\"EB2D66A6-4F92-4AB0-A8F0-FCE4EC0BED1A\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"387021A0-AF36-463C-A605-32EA7DAC172E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"17.12.0\",\"versionEndExcluding\":\"17.12.19\",\"matchCriteriaId\":\"1D6BD3C9-DAAC-4A1D-8504-871EAA6374F7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"17.14.0\",\"versionEndExcluding\":\"17.14.30\",\"matchCriteriaId\":\"C4E8314E-DF85-46D1-88D5-A551F73C780C\"}]}]}],\"references\":[{\"url\":\"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32178\",\"source\":\"secure@microsoft.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-32178\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-15T10:40:37.117716Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-15T10:43:00.851Z\"}}], \"cna\": {\"title\": \".NET Spoofing Vulnerability\", \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C\"}, \"scenarios\": [{\"lang\": \"en-US\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Microsoft\", \"product\": \".NET 10.0\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0.0\", \"lessThan\": \"10.0.6\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \".NET 8.0\", \"versions\": [{\"status\": \"affected\", \"version\": \"8.0\", \"lessThan\": \"8.0.26\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \".NET 8.0\", \"versions\": [{\"status\": \"affected\", \"version\": \"8.0.0\", \"lessThan\": \"8.0.26\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \".NET 9.0\", \"versions\": [{\"status\": \"affected\", \"version\": \"9.0.0\", \"lessThan\": \"9.0.15\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft Visual Studio 2022 version 17.12\", \"versions\": [{\"status\": \"affected\", \"version\": \"17.12.0\", \"lessThan\": \"17.12.19\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft Visual Studio 2022 version 17.14\", \"versions\": [{\"status\": \"affected\", \"version\": \"17.14.0\", \"lessThan\": \"17.14.30\", \"versionType\": \"custom\"}]}], \"datePublic\": \"2026-04-14T14:00:00.000Z\", \"references\": [{\"url\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32178\", \"name\": \".NET Spoofing Vulnerability\", \"tags\": [\"vendor-advisory\", \"patch\"]}], \"descriptions\": [{\"lang\": \"en-US\", \"value\": \"Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"type\": \"CWE\", \"cweId\": \"CWE-138\", \"description\": \"CWE-138: Improper Neutralization of Special Elements\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"17.12.19\", \"versionStartIncluding\": \"17.12.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"17.14.30\", \"versionStartIncluding\": \"17.14.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.6\", \"versionStartIncluding\": \"10.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"8.0.26\", \"versionStartIncluding\": \"8.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"8.0.26\", \"versionStartIncluding\": \"8.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"9.0.15\", \"versionStartIncluding\": \"9.0.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2026-05-12T17:38:28.486Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-32178\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T17:38:28.486Z\", \"dateReserved\": \"2026-03-11T00:26:53.425Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2026-04-14T16:57:31.355Z\", \"assignerShortName\": \"microsoft\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…