{"id":"RLSA-2026:54550","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.","modified":"2026-08-15T06:30:25.219549276Z","published":"2026-08-15T06:01:15.749673Z","upstream":["CVE-2026-62899","CVE-2026-62900","CVE-2026-62901","CVE-2026-62909"],"database_specific":{"source_advisory":"RHSA-2026:54550","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/"},"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"}],"affected":[{"package":{"name":"dotnet9.0","ecosystem":"Rocky Linux:8","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"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:54550.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}