Red Hat Security Advisory: .NET 8.0 security update
NET 8. 0 on Red Hat Enterprise Linux 10 has two security vulnerabilities: a local file tampering issue via link following (CVE-2026-45491) and an ASP. NET Core denial of service caused by uncontrolled resource consumption (CVE-2026-45591). Updated . NET SDK 8. 0. 128 and Runtime 8. 0. 28 packages addressing these issues are available. The vulnerabilities affect multiple architectures and variants of Red Hat Enterprise Linux 10 and CodeReady Linux Builder 10.
AI Analysis
Technical Summary
Two security vulnerabilities were identified in .NET 8.0 on Red Hat Enterprise Linux 10: CVE-2026-45491 involves local file tampering through link following, and CVE-2026-45591 involves a denial of service in ASP.NET Core due to uncontrolled resource consumption. Red Hat has released updated .NET SDK 8.0.128 and .NET Runtime 8.0.28 packages that fix these issues. The advisory covers multiple architectures including x86_64, s390x, ppc64le, and aarch64. The update is classified as Important by Red Hat Product Security. No CVSS scores are provided in the advisory, but the severity is assessed as high.
Potential Impact
Successful exploitation of CVE-2026-45491 could allow local file tampering via symbolic link following, potentially leading to unauthorized modification of files. CVE-2026-45591 could allow denial of service by exhausting resources in ASP.NET Core applications. These vulnerabilities affect .NET 8.0 implementations on Red Hat Enterprise Linux 10 and related builder environments across multiple hardware architectures.
Mitigation Recommendations
Red Hat has released updated .NET SDK 8.0.128 and .NET Runtime 8.0.28 packages that address these vulnerabilities. Users should apply these official updates as detailed in the Red Hat advisory (RHSA-2026:25111) and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the provided patches.
Red Hat Security Advisory: .NET 8.0 security update
Description
NET 8. 0 on Red Hat Enterprise Linux 10 has two security vulnerabilities: a local file tampering issue via link following (CVE-2026-45491) and an ASP. NET Core denial of service caused by uncontrolled resource consumption (CVE-2026-45591). Updated . NET SDK 8. 0. 128 and Runtime 8. 0. 28 packages addressing these issues are available. The vulnerabilities affect multiple architectures and variants of Red Hat Enterprise Linux 10 and CodeReady Linux Builder 10.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Two security vulnerabilities were identified in .NET 8.0 on Red Hat Enterprise Linux 10: CVE-2026-45491 involves local file tampering through link following, and CVE-2026-45591 involves a denial of service in ASP.NET Core due to uncontrolled resource consumption. Red Hat has released updated .NET SDK 8.0.128 and .NET Runtime 8.0.28 packages that fix these issues. The advisory covers multiple architectures including x86_64, s390x, ppc64le, and aarch64. The update is classified as Important by Red Hat Product Security. No CVSS scores are provided in the advisory, but the severity is assessed as high.
Potential Impact
Successful exploitation of CVE-2026-45491 could allow local file tampering via symbolic link following, potentially leading to unauthorized modification of files. CVE-2026-45591 could allow denial of service by exhausting resources in ASP.NET Core applications. These vulnerabilities affect .NET 8.0 implementations on Red Hat Enterprise Linux 10 and related builder environments across multiple hardware architectures.
Mitigation Recommendations
Red Hat has released updated .NET SDK 8.0.128 and .NET Runtime 8.0.28 packages that address these vulnerabilities. Users should apply these official updates as detailed in the Red Hat advisory (RHSA-2026:25111) and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the provided patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:25111
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-45591"]
- Cvss Version
- null
Threat ID: 6a29eece3187570649a04d64
Added to database: 6/10/2026, 11:10:06 PM
Last enriched: 6/10/2026, 11:10:42 PM
Last updated: 6/11/2026, 1:27:29 AM
Views: 7
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