{"schema_version": "1.7.0", "id": "RLSA-2026:54550", "modified": "2026-08-15T06:09:24.589014Z", "published": "2026-08-15T06:01:15.749673Z", "upstream": ["CVE-2026-62899", "CVE-2026-62900", "CVE-2026-62901", "CVE-2026-62909"], "summary": "Important: .NET 9.0 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.\n\nSDK version: 9.0.120\nRuntime version: 9.0.19\n\nSecurity Fix(es):\n\n* .NET: .NET Core: .NET Security Feature Bypass Vulnerability (CVE-2026-62899)\n\n* .NET: .NET Information Disclosure Vulnerability (CVE-2026-62900)\n\n* .NET: .NET Denial of Service Vulnerability (CVE-2026-62901)\n\n* .NET: .NET Elevation of Privilege Vulnerability (CVE-2026-62909)\n\nBug Fix(es) and Enhancement(s):\n\n* Update .NET 9.0 to SDK 9.0.120 and Runtime 9.0.19 (JIRA:Rocky Linux-235473)\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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:8", "name": "dotnet9.0", "purl": "pkg:rpm/rocky-linux/dotnet9.0?distro=rocky-linux-8&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:9.0.120-1.el8_10"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:54550"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512175"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512179"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512180"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512185"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:54550"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:54550"}}