{"id":"CVE-2021-34485","published":"2021-08-12T18:11:57Z","modified":"2026-10-07T16:10:01Z","title":".NET Core and Visual Studio Information Disclosure Vulnerability","vendor":"Microsoft","product":".NET 5.0","tier":"tail","description":{"text":".NET Core and Visual Studio Information Disclosure Vulnerability","provenance":"source","from":"CVE.org"},"cvss":{"score":5,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.02066,"percentile":0.8131,"provenance":"source"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34485","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34485","tags":["x_refsource_MISC","x_transferred"]}],"priority":{"score":19.8,"factors":[{"name":"EPSS percentile","points":16.26},{"name":"CVSS severity","points":3.5}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":".NET 5.0","versions":[">= 5.0.0, < 5.0.9"]},{"vendor":"Microsoft","product":".NET Core 2.1","versions":[">= 2.1, < 2.1.30"]},{"vendor":"Microsoft","product":".NET Core 3.1","versions":[">= 3.1, < 3.1.18"]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)","versions":[">= 15.9.0, < 15.9.38"]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)","versions":[">= 16.10.0, < 16.10.5"]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)","versions":[">= 16.0, < 16.4.25"]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)","versions":[">= 16.0.0, < 16.7.18"]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)","versions":[">= 15.0.0, < 16.9.10"]},{"vendor":"Microsoft","product":"PowerShell 7.0","versions":[">= 7.0.0, < 7.0.7"]},{"vendor":"Microsoft","product":"PowerShell 7.1","versions":[">= 7.1.0, < 7.1.4"]}],"affected":[{"ecosystem":"NuGet","package":"Microsoft.NETCore.App","vulnerableRanges":[">=2.1.0, <2.1.29"],"patched":["2.1.29"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.linux-arm","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.linux-arm64","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.linux-musl-x64","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.linux-x64","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.osx-x64","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.rhel.6-x64","vulnerableRanges":[">=3.1.0, <3.1.18"],"patched":["3.1.18"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.win-arm","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"},{"ecosystem":"NuGet","package":"Microsoft.NETCore.App.Runtime.win-arm64","vulnerableRanges":[">=3.1.0, <3.1.18",">=5.0.0, <5.0.9"],"patched":["3.1.18","5.0.9"],"from":["GHSA-vgwq-hfqc-58wv"],"provenance":"source"}],"euvd":{"id":"EUVD-2022-7165","exploited":false,"provenance":"source"},"lineage":{"packageHistory":[{"cve":"CVE-2020-1108","published":"2020-05-21","fixed":"3.1.4","kev":false},{"cve":"CVE-2020-1147","published":"2020-07-14","fixed":"3.1.6","kev":true,"link":{"from":"CVE-2020-1147","to":"CVE-2021-34485","relation":"successor","confidence":"medium","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"NuGet:Microsoft.NETCore.App.Runtime.linux-arm","fromFixed":"3.1.6","toFixed":"3.1.18","daysApart":394},{"kind":"version-step","provenance":"source","package":"NuGet:Microsoft.NETCore.App.Runtime.linux-arm64","fromFixed":"3.1.6","toFixed":"3.1.18","daysApart":394},{"kind":"similar","provenance":"machine","score":0.52,"basis":"same product + description similarity"}]}},{"cve":"CVE-2021-34485","published":"2021-08-12","fixed":"5.0.9","kev":false},{"cve":"CVE-2020-8927","published":"2020-09-15","fixed":"6.0.3","kev":false},{"cve":"CVE-2022-24512","published":"2022-03-09","fixed":"6.0.3","kev":false,"link":{"from":"CVE-2021-34485","to":"CVE-2022-24512","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"NuGet:Microsoft.NETCore.App.Runtime.linux-arm","fromFixed":"3.1.18","toFixed":"3.1.23","daysApart":209},{"kind":"version-step","provenance":"source","package":"NuGet:Microsoft.NETCore.App.Runtime.linux-arm","fromFixed":"5.0.9","toFixed":"5.0.15","daysApart":209}]}},{"cve":"CVE-2023-21538","published":"2023-01-10","fixed":"6.0.13","kev":false}],"package":"NuGet:Microsoft.NETCore.App.Runtime.linux-arm"}}