CVE-2020-0603

Name: CVE-2020-0603
Creator: NVD / NIST
Published: 2020-01-14T23:15:30.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 19.98%

Last modified Jun 17, 2026

CVE-2020-0603 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle objects in memory.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka 'ASP.NET Core Remote Code Execution Vulnerability'.. EPSS estimates a 19.98% chance of exploitation in the next 30 days.

Description

A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle objects in memory.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka 'ASP.NET Core Remote Code Execution Vulnerability'.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

19.98%

97.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Microsoft	Asp.Net Core	2.1
Microsoft	Asp.Net Core	3.0
Microsoft	Asp.Net Core	3.1
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux Eus	8.1

References

https://access.redhat.com/errata/RHSA-2020:0130Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0134Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0603Patch, Vendor Advisory
https://access.redhat.com/errata/RHSA-2020:0130Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0134Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0603Patch, Vendor Advisory

Timeline

Published: Jan 14, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-0603?

How severe is CVE-2020-0603?

CVE-2020-0603 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 19.98% probability of exploitation in the next 30 days.

How do I fix CVE-2020-0603?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-0603?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST