alsa-2026:55858
Vulnerability from osv_almalinux
Published
2026-08-17 00:00
Modified
2026-08-18 11:15
Summary
Important: .NET 10.0 security, bug fix, and enhancement update
Details
.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.
SDK version: 10.0.111
Runtime version: 10.0.11
Security Fix(es):
- .NET: .NET Core: .NET Security Feature Bypass Vulnerability (CVE-2026-62899)
- .NET: .NET Information Disclosure Vulnerability (CVE-2026-62900)
- .NET: .NET Denial of Service Vulnerability (CVE-2026-62901)
- .NET: .NET Elevation of Privilege Vulnerability (CVE-2026-62909)
Bug Fix(es) and Enhancement(s):
- Update .NET 10.0 to SDK 10.0.111 and Runtime 10.0.11 [almalinux-10.2.z] (JIRA:AlmaLinux-235482)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
{
"affected": [
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "aspnetcore-runtime-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "aspnetcore-runtime-dbg-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "aspnetcore-targeting-pack-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-apphost-pack-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-host"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-hostfxr-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-runtime-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-runtime-dbg-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-sdk-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.111-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-sdk-10.0-source-built-artifacts"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.111-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-sdk-aot-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.111-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-sdk-dbg-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.111-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-targeting-pack-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.11-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "dotnet-templates-10.0"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.111-1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"details": ".NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a \u0027dotnet\u0027 application to drive everything. \n\nSDK version: 10.0.111 \nRuntime version: 10.0.11 \n\nSecurity Fix(es): \n\n * .NET: .NET Core: .NET Security Feature Bypass Vulnerability (CVE-2026-62899)\n * .NET: .NET Information Disclosure Vulnerability (CVE-2026-62900)\n * .NET: .NET Denial of Service Vulnerability (CVE-2026-62901)\n * .NET: .NET Elevation of Privilege Vulnerability (CVE-2026-62909)\n\n\nBug Fix(es) and Enhancement(s): \n\n * Update .NET 10.0 to SDK 10.0.111 and Runtime 10.0.11 [almalinux-10.2.z] (JIRA:AlmaLinux-235482)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
"id": "ALSA-2026:55858",
"modified": "2026-08-18T11:15:59Z",
"published": "2026-08-17T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:55858"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-62899"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-62900"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-62901"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-62909"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2512175"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2512179"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2512180"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2512185"
},
{
"type": "ADVISORY",
"url": "https://errata.almalinux.org/10/ALSA-2026-55858.html"
}
],
"related": [
"CVE-2026-62899",
"CVE-2026-62900",
"CVE-2026-62901",
"CVE-2026-62909"
],
"summary": "Important: .NET 10.0 security, bug fix, and enhancement update"
}
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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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