CVE-2018-0764

Denial of service vulnerability exists when .NET and .NET Core improperly process XML documents

7.5 HighFix available

CVE-2018-0764 is a high vulnerability (CVSS 7.5) in Microsoft .net Core, published January 10, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 8.88%, the 95th percentile. Fixed in System.Security.Cryptography.Xml 4.4.2.

Microsoft .NET Framework 1.1, 2.0, 3.0, 3.5, 3.5.1, 4, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 5.7 and .NET Core 1.0. 1.1 and 2.0 allow a denial of service vulnerability due to the way XML documents are processed, aka ".NET and .NET Core Denial Of Service Vulnerability". This CVE is unique from CVE-2018-0765.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

8.88%Down 4.1 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

Record: CVE-2018-0764
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-0764
Updated: 2026-11-02

EUVDEUVD-2018-0687 No score

Record: EUVD-2018-0687
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rr3c-f55v-qhv5 7.5

Denial of service vulnerability exists when .NET and .NET Core improperly process XML documents

Record: GHSA-rr3c-f55v-qhv5
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSV 7.5

Record: CVE-2018-0764
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVGHSA-rr3c-f55v-qhv5 7.5

Denial of service vulnerability exists when .NET and .NET Core improperly process XML documents

Record: GHSA-rr3c-f55v-qhv5
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVRHSA-2018:0379 5.3

Red Hat Security Advisory: .NET Core on Red Hat Enterprise Linux security update

Record: RHSA-2018:0379
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`System.Security.Cryptography.Xml` NuGet	before 4.4.2	4.4.2
`System.Security.Cryptography.Xml` NuGet	before 4.4.2, plus listed versions 4.4.04.4.0-preview1-25305-024.4.0-preview2-25405-014.4.1	4.4.2
`rh-dotnetcore10-dotnetcore` Red Hat:rhel_dotnet:1.0::el7	before 0:1.0.9-1.el7	0:1.0.9-1.el7
`rh-dotnetcore10-dotnetcore-debuginfo` Red Hat:rhel_dotnet:1.0::el7	before 0:1.0.9-1.el7	0:1.0.9-1.el7
`rh-dotnetcore11-dotnetcore` Red Hat:rhel_dotnet:1.1::el7	before 0:1.1.6-1.el7	0:1.1.6-1.el7
`rh-dotnetcore11-dotnetcore-debuginfo` Red Hat:rhel_dotnet:1.1::el7	before 0:1.1.6-1.el7	0:1.1.6-1.el7
`rh-dotnet20-dotnet` Red Hat:rhel_dotnet:2.0::el7	before 0:2.0.5-1.el7	0:2.0.5-1.el7
`rh-dotnet20-dotnet-debuginfo` Red Hat:rhel_dotnet:2.0::el7	before 0:2.0.5-1.el7	0:2.0.5-1.el7
`rh-dotnet20-dotnet-host` Red Hat:rhel_dotnet:2.0::el7	before 0:2.0.5-1.el7	0:2.0.5-1.el7
`rh-dotnet20-dotnet-runtime-2.0` Red Hat:rhel_dotnet:2.0::el7	before 0:2.0.5-1.el7	0:2.0.5-1.el7
`rh-dotnet20-dotnet-sdk-2.1` Red Hat:rhel_dotnet:2.0::el7	before 0:2.1.4-1.el7	0:2.1.4-1.el7

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

References

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