Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update
.NET 9.0 for Red Hat Enterprise Linux has multiple security vulnerabilities including a security feature bypass, information disclosure, denial of service, and elevation of privilege. These issues are addressed in an update to SDK version 9.0.120 and runtime version 9.0.19. The advisory rates the security impact as Important and provides fixes for four CVEs: CVE-2026-62899, CVE-2026-62900, CVE-2026-62901, and CVE-2026-62909. The update is available for various Red Hat Enterprise Linux 8 variants and related builder products. Users are advised to apply the update to remediate these vulnerabilities.
AI Analysis
Technical Summary
This Red Hat security advisory addresses four distinct vulnerabilities in .NET 9.0 on Red Hat Enterprise Linux 8. The vulnerabilities include a security feature bypass (CVE-2026-62899), information disclosure (CVE-2026-62900), denial of service (CVE-2026-62901), and elevation of privilege (CVE-2026-62909). The advisory updates the .NET SDK to version 9.0.120 and the runtime to 9.0.19 to fix these issues. The vulnerabilities affect multiple architectures supported by Red Hat Enterprise Linux 8 and related builder products. The advisory does not provide CVSS scores but rates the impact as Important. No known exploits in the wild have been reported. The update is available through Red Hat's official channels.
Potential Impact
The vulnerabilities collectively could allow attackers to bypass security features, disclose sensitive information, cause denial of service conditions, or elevate privileges within the .NET runtime environment on affected Red Hat Enterprise Linux 8 systems. This could impact the confidentiality, integrity, and availability of applications running on the platform. The advisory rates the overall security impact as Important, indicating a high risk if unpatched.
Mitigation Recommendations
Red Hat has released an update to .NET 9.0 that includes SDK version 9.0.120 and runtime version 9.0.19 which addresses these vulnerabilities. Users should apply this update promptly to remediate the security issues. Detailed instructions for applying the update are available in the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official update.
Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update
Description
.NET 9.0 for Red Hat Enterprise Linux has multiple security vulnerabilities including a security feature bypass, information disclosure, denial of service, and elevation of privilege. These issues are addressed in an update to SDK version 9.0.120 and runtime version 9.0.19. The advisory rates the security impact as Important and provides fixes for four CVEs: CVE-2026-62899, CVE-2026-62900, CVE-2026-62901, and CVE-2026-62909. The update is available for various Red Hat Enterprise Linux 8 variants and related builder products. Users are advised to apply the update to remediate these vulnerabilities.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory addresses four distinct vulnerabilities in .NET 9.0 on Red Hat Enterprise Linux 8. The vulnerabilities include a security feature bypass (CVE-2026-62899), information disclosure (CVE-2026-62900), denial of service (CVE-2026-62901), and elevation of privilege (CVE-2026-62909). The advisory updates the .NET SDK to version 9.0.120 and the runtime to 9.0.19 to fix these issues. The vulnerabilities affect multiple architectures supported by Red Hat Enterprise Linux 8 and related builder products. The advisory does not provide CVSS scores but rates the impact as Important. No known exploits in the wild have been reported. The update is available through Red Hat's official channels.
Potential Impact
The vulnerabilities collectively could allow attackers to bypass security features, disclose sensitive information, cause denial of service conditions, or elevate privileges within the .NET runtime environment on affected Red Hat Enterprise Linux 8 systems. This could impact the confidentiality, integrity, and availability of applications running on the platform. The advisory rates the overall security impact as Important, indicating a high risk if unpatched.
Mitigation Recommendations
Red Hat has released an update to .NET 9.0 that includes SDK version 9.0.120 and runtime version 9.0.19 which addresses these vulnerabilities. Users should apply this update promptly to remediate the security issues. Detailed instructions for applying the update are available in the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:54550
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-62900","CVE-2026-62901","CVE-2026-62909"]
- Cvss Version
- null
Threat ID: 6a7e0344bf8831d5398f5671
Added to database: 08/13/2026, 17:47:48 UTC
Last enriched: 08/13/2026, 17:51:12 UTC
Last updated: 08/13/2026, 23:40:59 UTC
Views: 2
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