No access to your tenant or devices. Every item links to its source. What this means
CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.
Exact risk observation. Current source statements above are a separate evidence layer. Latest risk evidence.
No KEV entry is attached to this observation; this is not evidence that exploitation is absent.
FIRST EPSS: 2.07 % · percentile 81.44 % · scored 4 Nov 2026. Retained older prediction.
Observed 05 Nov 2026 02:54:06 UTC · Complete immutable risk JSON
.NET Core and Visual Studio Information Disclosure Vulnerability
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 3.1 · 5.0 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
.NET Core and Visual Studio Information Disclosure Vulnerability
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
datePublished: Aug 12, 2021, 6:11:57 PM
dateUpdated: Oct 7, 2026, 4:10:01 PM
RHSA-2021:3145: Red Hat Security Advisory: .NET Core 2.1 security and bugfix update
CVE-2021-34485
RHSA-2021:3148: Red Hat Security Advisory: .NET 5.0 security and bugfix update
CVE-2021-26423 · CVE-2021-34485 · CVE-2021-34532
RHSA-2021:3142: Red Hat Security Advisory: .NET Core 3.1 security and bugfix update
CVE-2021-26423 · CVE-2021-34485 · CVE-2021-34532
msrc_CVE-2021-34485: .NET Core and Visual Studio Information Disclosure Vulnerability
CVE-2021-34485
RHSA-2021:3144: Red Hat Security Advisory: .NET Core 2.1 on Red Hat Enterprise Linux security and bugfix update
CVE-2021-34485
RHSA-2021:3147: Red Hat Security Advisory: .NET 5.0 on RHEL 7 security and bugfix update
CVE-2021-26423 · CVE-2021-34485 · CVE-2021-34532
RHSA-2021:3143: Red Hat Security Advisory: .NET Core 3.1 on RHEL 7 security and bugfix update
CVE-2021-26423 · CVE-2021-34485 · CVE-2021-34532
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 3.1 · 5.0 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
.NET Core and Visual Studio Information Disclosure Vulnerability
NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.
Source analysis status: Modified
Weakness classifications: NVD-CWE-noinfo · CWE-200
published: 2021-08-12T18:15:09.157
lastModified: 2026-10-07T17:16:42.997
The original JSON retains the logical configuration operators, exclusions and version bounds.
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 3.1 · [email protected] · Secondary · 5.0 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CVSS 3.1 · [email protected] · Secondary · 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0 · Secondary · 5.0 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0 · [email protected] · Primary · 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 5.0, .NET Core 3.1 and .NET Core 2.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. An information disclosure vulnerability exists in .NET 5.0, .NET Core 3.1 and .NET Core 2.1 when dumps created by the tool to collect crash dumps and dumps on demand are created with global read permissions on Linux and macOS. ### Patches * If you're using .NET 5.0, you should download and install Runtime 5.0.9 or SDK 5.0.206 (for Visual Studio 2019 v16.8) or SDK 5.0.303 (for Visual Studio 2019 V16.10) from https://dotnet.microsoft.com/download/dotnet-core/5.0. * If you're using .NET Core 3.1, you should download and install Runtime 3.1.18 or SDK 3.1.118 (for Visual Studio 2019 v16.4) or 3.1.412 (for Visual Studio 2019 v16.7 or later) from https://dotnet.microsoft.com/download/dotnet-core/3.1. * If you're using .NET Core 2.1, you should download and install Runtime 2.1.29 or SDK 2.1.525 (for Visual Studio 2019 v15.9) or 2.1.817 from https://dotnet.microsoft.com/download/dotnet-core/2.1. #### Other Details - Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/196 - An Issue for this can be found at https://github.com/dotnet/runtime/issues/57174 - MSRC details for this can be found at https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34485
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Publisher rating · MODERATE