CVE-2020-0603
dotnet: Memory Corruption in SignalR
Severity
CriticalRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 14, 2020
Updated · June 27, 2026
Description
A memory corruption flaw was found in ASP.NET core. A client can write to freed memory on the server which could result in undefined behavior. An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code by sending specially crafted requests to an ASP.NET Core application.
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 · 8.1CVSS: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