Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update
Affects Red Hat .NET 10.0Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 5.9 Medium · fixed in Red Hat package updates : update Red Hat microsoft.netcore.app when convenient.
Data as of 30 Oct 2026, 06:44 UTC
Thin evidence
One scorer or none| CNA (microsoft) | CVSS 3.1 | 5.9 |
|---|
- Patch
- Available – fixed in 10.0.11, 8.0.30, 9.0.19 +2
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 11 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft.NET 10.0 runtime | Affected
| Fixed in
|
| Microsoft.NET 8.0 runtime | Affected
| Fixed in
|
| Microsoft.NET 9.0 runtime | Affected
| Fixed in
|
| MicrosoftMicrosoft Visual Studio 2022 version 17.14 | Affected
| Fixed in
|
| MicrosoftMicrosoft Visual Studio 2026 version 18.8 | Affected
| Fixed in
|
NuGetmicrosoft.netcore.apppkg:nuget/microsoft.netcore.appOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
.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 [rhel-10.2.z] (JIRA:RHEL-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
- access.redhat.com/errata/RHSA-2026:55858 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2512175 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2512179 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2512180 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2512185 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_55858.json (opens in a new tab)