CVE-2021-26701
High
Description
.NET Core Remote Code Execution Vulnerability
SeverityHigh
CVSS8.1
Exploit probability—
Product
Microsoft .net
PublishedFeb 25, 2021
First seenFeb 25, 2021
How to fix
Update
- microsoft .net5.0.4 or later
- microsoft .net_core2.1.28, 3.1.15 or later
- System.Text.Encodings.Web4.5.1, 4.7.2, 5.0.1 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XPUKFHIGP5YNJRRFWKDJ2XRS4WTFJNNK/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TW3ZSJTTMZAFKGW7NJWTVVFZUYYU2SJZ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WA5WQJVHUL5C4XMJTLY3C67R4WP35EF4/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YLFATXASXW4OV2ZBSRP4G55HJH73QPBP/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBOSSX7U6BSHV5RI74FCOW4ITJ5RRJR5/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2AZOUKMCHT2WBHR7MYDTYXWOBHZW5P5/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft .net | 5.0 ≤ v < 5.0.4 | 5.0.4 |
| microsoft .net_core | 2.1 ≤ v < 2.1.28, 3.1 ≤ v < 3.1.15 | 2.1.28, 3.1.15 |
| microsoft powershell_core | 7.0, 7.1 | — |
| microsoft visual_studio_2019 | 16.0 ≤ v ≤ 16.9, No range specified | — |
| fedoraproject fedora | 32, 33, 34 | — |
| System.Text.Encodings.WebNuGet | 4.0.0 ≤ v < 4.5.1, 4.6.0 ≤ v < 4.7.2, 5.0.0 ≤ v < 5.0.1 | 4.5.1, 4.7.2, 5.0.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.