5.5Medium
Microsoft Asp.Net Core
CVE-2021-34532
ASP.NET Core and Visual Studio Information Disclosure Vulnerability
What this means for your business
- It affects Microsoft Asp.Net Core. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it only with access to the machine itself, with an ordinary user login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Microsoft Asp.Net Core, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
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Scoring
- CVSS
- 5.5 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Assigned by
- secure@microsoft.com
Dates
- Published
- 2021-08-12
- Last modified
- 2026-08-10
- Sources
- NVD
Affected products
- Microsoft Asp.Net Core2.1 - 2.1.2, 3.1 - 3.1.17, 5.0 - 5.0.8
- Microsoft Visual Studio 201916.0 - 16.10, 8.10
As listed in the NVD configuration data. Not a statement about your estate.