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CERTFR-2026-AVI-0443
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans Microsoft .Net. Elles permettent à un attaquant de provoquer un déni de service à distance et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Microsoft | .Net | .NET 8.0 versions antérieures à 8.0.26 | ||
| Microsoft | .Net | Microsoft .NET Framework 3.5 versions antérieures à 2.0.50727.8982 et 3.0.30729.8976 | ||
| Microsoft | .Net | .NET 8.0 installé sur Windows versions antérieures à 8.0.26 | ||
| Microsoft | .Net | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 versions antérieures à 4.7.4141.0 | ||
| Microsoft | .Net | Microsoft .NET Framework 3.5 et 4.8.1 versions antérieures à 2.0.50727.9181, 3.0.30729.9165 et 4.8.9332.0 | ||
| Microsoft | .Net | Microsoft .NET Framework 3.5 et 4.8 versions antérieures à 2.0.50727.9181, 3.0.30729.9165 et 4.8.4801.0 | ||
| Microsoft | .Net | .NET 10.0 installé sur Linux versions antérieures à 10.0.6 | ||
| Microsoft | .Net | .NET 8.0 installé sur Linux versions antérieures à 8.0.26 | ||
| Microsoft | .Net | .NET 9.0 installé sur Mac OS versions antérieures à 9.0.15 | ||
| Microsoft | .Net | .NET 10.0 installé sur Windows versions antérieures à 10.0.6 | ||
| Microsoft | .Net | Microsoft .NET Framework 3.5 et 4.7.2 versions antérieures à 2.0.50727.9068, 3.0.30729.9065 et 4.7.4141.0 | ||
| Microsoft | .Net | .NET 8.0 installé sur Mac OS versions antérieures à 8.0.26 | ||
| Microsoft | .Net | .NET 9.0 installé sur Linux versions antérieures à 9.0.15 | ||
| Microsoft | .Net | .NET 9.0 installé sur Windows versions antérieures à 9.0.15 | ||
| Microsoft | .Net | Microsoft .NET Framework 4.8 versions antérieures à 4.8.4801.0 | ||
| Microsoft | .Net | .NET 10.0 installé sur Mac OS versions antérieures à 10.0.6 |
References
| Title | Publication Time | Tags | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": ".NET 8.0 versions ant\u00e9rieures \u00e0 8.0.26",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Microsoft .NET Framework 3.5 versions ant\u00e9rieures \u00e0 2.0.50727.8982 et 3.0.30729.8976",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 8.0 install\u00e9 sur Windows versions ant\u00e9rieures \u00e0 8.0.26",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 versions ant\u00e9rieures \u00e0 4.7.4141.0",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Microsoft .NET Framework 3.5 et 4.8.1 versions ant\u00e9rieures \u00e0 2.0.50727.9181, 3.0.30729.9165 et 4.8.9332.0",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Microsoft .NET Framework 3.5 et 4.8 versions ant\u00e9rieures \u00e0 2.0.50727.9181, 3.0.30729.9165 et 4.8.4801.0",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 10.0 install\u00e9 sur Linux versions ant\u00e9rieures \u00e0 10.0.6",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 8.0 install\u00e9 sur Linux versions ant\u00e9rieures \u00e0 8.0.26",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 9.0 install\u00e9 sur Mac OS versions ant\u00e9rieures \u00e0 9.0.15",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 10.0 install\u00e9 sur Windows versions ant\u00e9rieures \u00e0 10.0.6",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Microsoft .NET Framework 3.5 et 4.7.2 versions ant\u00e9rieures \u00e0 2.0.50727.9068, 3.0.30729.9065 et 4.7.4141.0",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 8.0 install\u00e9 sur Mac OS versions ant\u00e9rieures \u00e0 8.0.26",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 9.0 install\u00e9 sur Linux versions ant\u00e9rieures \u00e0 9.0.15",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 9.0 install\u00e9 sur Windows versions ant\u00e9rieures \u00e0 9.0.15",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": "Microsoft .NET Framework 4.8 versions ant\u00e9rieures \u00e0 4.8.4801.0",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
},
{
"description": ".NET 10.0 install\u00e9 sur Mac OS versions ant\u00e9rieures \u00e0 10.0.6",
"product": {
"name": ".Net",
"vendor": {
"name": "Microsoft",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-26171",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-26171"
},
{
"name": "CVE-2026-32203",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-32203"
},
{
"name": "CVE-2026-33116",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33116"
},
{
"name": "CVE-2026-32178",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-32178"
},
{
"name": "CVE-2026-23666",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23666"
},
{
"name": "CVE-2026-32226",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-32226"
}
],
"initial_release_date": "2026-04-15T00:00:00",
"last_revision_date": "2026-04-15T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0443",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-04-15T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Microsoft .Net. Elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Microsoft .Net",
"vendor_advisories": [
{
"published_at": "2026-04-14",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft .Net CVE-2026-32178",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32178"
},
{
"published_at": "2026-04-14",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft .Net CVE-2026-33116",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33116"
},
{
"published_at": "2026-04-14",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft .Net CVE-2026-32203",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203"
},
{
"published_at": "2026-04-14",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft .Net CVE-2026-32226",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226"
},
{
"published_at": "2026-04-14",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft .Net CVE-2026-26171",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26171"
},
{
"published_at": "2026-04-14",
"title": "Bulletin de s\u00e9curit\u00e9 Microsoft .Net CVE-2026-23666",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23666"
}
]
}
CVE-2026-26171 (GCVE-0-2026-26171)
Vulnerability from cvelistv5
Published
2026-04-14 16:58
Modified
2026-06-01 19:13
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | .NET 10.0 |
Version: 10.0.0 < 10.0.6 |
||||||||||||||||||||||
|
||||||||||||||||||||||||
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CVE-2026-32178 (GCVE-0-2026-32178)
Vulnerability from cvelistv5
Published
2026-04-14 16:57
Modified
2026-06-01 19:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-138 - Improper Neutralization of Special Elements
Summary
Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | .NET 10.0 |
Version: 10.0.0 < 10.0.6 |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2026-23666 (GCVE-0-2026-23666)
Vulnerability from cvelistv5
Published
2026-04-14 16:57
Modified
2026-06-01 19:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Summary
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 |
Version: 3.5.0 < 2.0.50727.8982 & 3.0.30729.8976 |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2026-32226 (GCVE-0-2026-32226)
Vulnerability from cvelistv5
Published
2026-04-14 16:57
Modified
2026-06-01 19:13
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 |
Version: 3.5.0 < 2.0.50727.8982 & 3.0.30729.8976 |
|||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||
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CVE-2026-33116 (GCVE-0-2026-33116)
Vulnerability from cvelistv5
Published
2026-04-14 16:57
Modified
2026-06-01 19:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | .NET 10.0 |
Version: 10.0.0 < 10.0.6 |
|||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2026-32203 (GCVE-0-2026-32203)
Vulnerability from cvelistv5
Published
2026-04-14 16:58
Modified
2026-06-01 19:13
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | .NET 10.0 |
Version: 10.0.0 < 10.0.6 |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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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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