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CVE-2019-0820

HIGHCVSS 7.5/10EPSS 5.88%

Last modified

CVE-2019-0820 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.. EPSS estimates a 5.88% chance of exploitation in the next 30 days.

Description

A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
5.88%

92.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
Microsoft.Net Core1.0—
Microsoft.Net Core1.1—
Microsoft.Net Core2.1—
Microsoft.Net Core2.2—
Microsoft.Net Framework2.0Sp2
Microsoft.Net Framework3.0Sp2
Microsoft.Net Framework3.5—
Microsoft.Net Framework3.5.1—
Microsoft.Net Framework4.5.2—
Microsoft.Net Framework4.6—
Microsoft.Net Framework4.6.2—
Microsoft.Net Framework4.7—
Microsoft.Net Framework4.7.1—
Microsoft.Net Framework4.7.2—
Microsoft.Net Framework4.6.1—
Microsoft.Net Framework4.8—
RedhatEnterprise Linux8.0—
RedhatEnterprise Linux Eus8.1—
RedhatEnterprise Linux Eus8.2—
RedhatEnterprise Linux Eus8.4—
RedhatEnterprise Linux Eus8.6—
RedhatEnterprise Linux Server Aus8.2—
RedhatEnterprise Linux Server Aus8.4—
RedhatEnterprise Linux Server Aus8.6—
RedhatEnterprise Linux Server Tus8.2—
RedhatEnterprise Linux Server Tus8.4—
RedhatEnterprise Linux Server Tus8.6—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-0820?
A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.
How severe is CVE-2019-0820?
CVE-2019-0820 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.88% probability of exploitation in the next 30 days.
How do I fix CVE-2019-0820?
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-2019-0820?

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

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Source: NVD / NIST