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CVE-2021-26701

dotnet: System.Text.Encodings.Web Remote Code Execution

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Severity

Important

Red Hat Product Security

8.1

CVSS 3.1

Review impact separately from score.

Published · February 25, 2021

Updated · June 28, 2026

Description

A remote code execution vulnerability was found in dotnet in the System.Text.Encodings.Web package, caused by a buffer overrun. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer