01 Record

CVE-2026-26127

.NET Denial of Service Vulnerability

HighPUBLISHEDCNA: microsoft

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

View raw JSON

02 Description

.NET Denial of Service Vulnerability

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

2.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 81.8% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-03-10 17:05Z7 MO AGO

Last updated

2026-06-19 18:17Z4 MO AGO

Reserved

2026-02-11

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

5c8975c0ad1a8337f5f8d8cfb4a1b0f4c78ca6d1dcc9247d5674b505df2c8ea9

05 Affected products

VendorProductVersionsPlatforms

Microsoft.NET 10.010.0.0 to < 10.0.4—

Microsoft.NET 9.09.0.0 to < 9.0.14—

MicrosoftMicrosoft.Bcl.Memory10.0.0 to < 10.0.4, 9.0.0 to < 9.0.14—

06 References

msrc.microsoft.com.NET Denial of Service Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26127vendor-advisorypatch

07 Fixed in

AlmaLinux 8

aspnetcore-runtime-10.0
Fixed in 10.0.4-1.el8_10
aspnetcore-runtime-9.0
Fixed in 9.0.14-1.el8_10
aspnetcore-runtime-dbg-10.0
Fixed in 10.0.4-1.el8_10
aspnetcore-runtime-dbg-9.0
Fixed in 9.0.14-1.el8_10
aspnetcore-targeting-pack-10.0
Fixed in 10.0.4-1.el8_10
aspnetcore-targeting-pack-9.0
Fixed in 9.0.14-1.el8_10
dotnet
Fixed in 10.0.104-1.el8_10
dotnet-apphost-pack-10.0
Fixed in 10.0.4-1.el8_10
dotnet-apphost-pack-9.0
Fixed in 9.0.14-1.el8_10
dotnet-host
Fixed in 10.0.4-1.el8_10
dotnet-hostfxr-10.0
Fixed in 10.0.4-1.el8_10
dotnet-hostfxr-9.0
Fixed in 9.0.14-1.el8_10
dotnet-runtime-10.0
Fixed in 10.0.4-1.el8_10
dotnet-runtime-9.0
Fixed in 9.0.14-1.el8_10
dotnet-runtime-dbg-10.0
Fixed in 10.0.4-1.el8_10
dotnet-runtime-dbg-9.0
Fixed in 9.0.14-1.el8_10
dotnet-sdk-10.0
Fixed in 10.0.104-1.el8_10
dotnet-sdk-10.0-source-built-artifacts
Fixed in 10.0.104-1.el8_10
dotnet-sdk-9.0
Fixed in 9.0.115-1.el8_10
dotnet-sdk-9.0-source-built-artifacts
Fixed in 9.0.115-1.el8_10
dotnet-sdk-aot-10.0
Fixed in 10.0.104-1.el8_10
dotnet-sdk-aot-9.0
Fixed in 9.0.115-1.el8_10
dotnet-sdk-dbg-10.0
Fixed in 10.0.104-1.el8_10
dotnet-sdk-dbg-9.0
Fixed in 9.0.115-1.el8_10
dotnet-targeting-pack-10.0
Fixed in 10.0.4-1.el8_10
dotnet-targeting-pack-9.0
Fixed in 9.0.14-1.el8_10
dotnet-templates-10.0
Fixed in 10.0.104-1.el8_10
dotnet-templates-9.0
Fixed in 9.0.115-1.el8_10
netstandard-targeting-pack-2.1
Fixed in 9.0.115-1.el8_10

AlmaLinux 9

aspnetcore-runtime-10.0
Fixed in 10.0.4-1.el9_7
aspnetcore-runtime-9.0
Fixed in 9.0.14-1.el9_7
aspnetcore-runtime-dbg-10.0
Fixed in 10.0.4-1.el9_7
aspnetcore-runtime-dbg-9.0
Fixed in 9.0.14-1.el9_7
aspnetcore-targeting-pack-10.0
Fixed in 10.0.4-1.el9_7
aspnetcore-targeting-pack-9.0
Fixed in 9.0.14-1.el9_7
dotnet-apphost-pack-10.0
Fixed in 10.0.4-1.el9_7
dotnet-apphost-pack-9.0
Fixed in 9.0.14-1.el9_7
dotnet-host
Fixed in 10.0.4-1.el9_7
dotnet-hostfxr-10.0
Fixed in 10.0.4-1.el9_7
dotnet-hostfxr-9.0
Fixed in 9.0.14-1.el9_7
dotnet-runtime-10.0
Fixed in 10.0.4-1.el9_7
dotnet-runtime-9.0
Fixed in 9.0.14-1.el9_7
dotnet-runtime-dbg-10.0
Fixed in 10.0.4-1.el9_7
dotnet-runtime-dbg-9.0
Fixed in 9.0.14-1.el9_7
dotnet-sdk-10.0
Fixed in 10.0.104-1.el9_7
dotnet-sdk-10.0-source-built-artifacts
Fixed in 10.0.104-1.el9_7
dotnet-sdk-9.0
Fixed in 9.0.115-1.el9_7
dotnet-sdk-9.0-source-built-artifacts
Fixed in 9.0.115-1.el9_7
dotnet-sdk-aot-10.0
Fixed in 10.0.104-1.el9_7
dotnet-sdk-aot-9.0
Fixed in 9.0.115-1.el9_7
dotnet-sdk-dbg-10.0
Fixed in 10.0.104-1.el9_7
dotnet-sdk-dbg-9.0
Fixed in 9.0.115-1.el9_7
dotnet-targeting-pack-10.0
Fixed in 10.0.4-1.el9_7
dotnet-targeting-pack-9.0
Fixed in 9.0.14-1.el9_7
dotnet-templates-10.0
Fixed in 10.0.104-1.el9_7
dotnet-templates-9.0
Fixed in 9.0.115-1.el9_7
netstandard-targeting-pack-2.1
Fixed in 9.0.115-1.el9_7

AlmaLinux 10

aspnetcore-runtime-10.0
Fixed in 10.0.4-1.el10_1
aspnetcore-runtime-9.0
Fixed in 9.0.14-1.el10_1
aspnetcore-runtime-dbg-10.0
Fixed in 10.0.4-1.el10_1
aspnetcore-runtime-dbg-9.0
Fixed in 9.0.14-1.el10_1
aspnetcore-targeting-pack-10.0
Fixed in 10.0.4-1.el10_1
aspnetcore-targeting-pack-9.0
Fixed in 9.0.14-1.el10_1
dotnet-apphost-pack-10.0
Fixed in 10.0.4-1.el10_1
dotnet-apphost-pack-9.0
Fixed in 9.0.14-1.el10_1
dotnet-host
Fixed in 10.0.4-1.el10_1
dotnet-hostfxr-10.0
Fixed in 10.0.4-1.el10_1
dotnet-hostfxr-9.0
Fixed in 9.0.14-1.el10_1
dotnet-runtime-10.0
Fixed in 10.0.4-1.el10_1
dotnet-runtime-9.0
Fixed in 9.0.14-1.el10_1
dotnet-runtime-dbg-10.0
Fixed in 10.0.4-1.el10_1
dotnet-runtime-dbg-9.0
Fixed in 9.0.14-1.el10_1
dotnet-sdk-10.0
Fixed in 10.0.104-1.el10_1
dotnet-sdk-10.0-source-built-artifacts
Fixed in 10.0.104-1.el10_1
dotnet-sdk-9.0
Fixed in 9.0.115-1.el10_1
dotnet-sdk-9.0-source-built-artifacts
Fixed in 9.0.115-1.el10_1
dotnet-sdk-aot-10.0
Fixed in 10.0.104-1.el10_1
dotnet-sdk-aot-9.0
Fixed in 9.0.115-1.el10_1
dotnet-sdk-dbg-10.0
Fixed in 10.0.104-1.el10_1
dotnet-sdk-dbg-9.0
Fixed in 9.0.115-1.el10_1
dotnet-targeting-pack-10.0
Fixed in 10.0.4-1.el10_1
dotnet-targeting-pack-9.0
Fixed in 9.0.14-1.el10_1
dotnet-templates-10.0
Fixed in 10.0.104-1.el10_1
dotnet-templates-9.0
Fixed in 9.0.115-1.el10_1
netstandard-targeting-pack-2.1
Fixed in 9.0.115-1.el10_1

CloudLinux 8

aspnetcore-runtime-10.0
Fixed in 10.0.4-1.el8_10
aspnetcore-runtime-9.0
Fixed in 9.0.14-1.el8_10
aspnetcore-runtime-dbg-10.0
Fixed in 10.0.4-1.el8_10
aspnetcore-runtime-dbg-9.0
Fixed in 9.0.14-1.el8_10
aspnetcore-targeting-pack-10.0
Fixed in 10.0.4-1.el8_10
aspnetcore-targeting-pack-9.0
Fixed in 9.0.14-1.el8_10
dotnet
Fixed in 10.0.104-1.el8_10
dotnet-apphost-pack-10.0
Fixed in 10.0.4-1.el8_10
dotnet-apphost-pack-9.0
Fixed in 9.0.14-1.el8_10
dotnet-host
Fixed in 10.0.4-1.el8_10
dotnet-hostfxr-10.0
Fixed in 10.0.4-1.el8_10
dotnet-hostfxr-9.0
Fixed in 9.0.14-1.el8_10
dotnet-runtime-10.0
Fixed in 10.0.4-1.el8_10
dotnet-runtime-9.0
Fixed in 9.0.14-1.el8_10
dotnet-runtime-dbg-10.0
Fixed in 10.0.4-1.el8_10
dotnet-runtime-dbg-9.0
Fixed in 9.0.14-1.el8_10
dotnet-sdk-10.0
Fixed in 10.0.104-1.el8_10
dotnet-sdk-10.0-source-built-artifacts
Fixed in 10.0.104-1.el8_10
dotnet-sdk-9.0
Fixed in 9.0.115-1.el8_10
dotnet-sdk-9.0-source-built-artifacts
Fixed in 9.0.115-1.el8_10
dotnet-sdk-aot-10.0
Fixed in 10.0.104-1.el8_10
dotnet-sdk-aot-9.0
Fixed in 9.0.115-1.el8_10
dotnet-sdk-dbg-10.0
Fixed in 10.0.104-1.el8_10
dotnet-sdk-dbg-9.0
Fixed in 9.0.115-1.el8_10
dotnet-targeting-pack-10.0
Fixed in 10.0.4-1.el8_10
dotnet-targeting-pack-9.0
Fixed in 9.0.14-1.el8_10
dotnet-templates-10.0
Fixed in 10.0.104-1.el8_10
dotnet-templates-9.0
Fixed in 9.0.115-1.el8_10
netstandard-targeting-pack-2.1
Fixed in 9.0.115-1.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

CloudLinux 9

aspnetcore-runtime-10.0
Fixed in 10.0.4-1.el9_7
aspnetcore-runtime-9.0
Fixed in 9.0.14-1.el9_7
aspnetcore-runtime-dbg-10.0
Fixed in 10.0.4-1.el9_7
aspnetcore-runtime-dbg-9.0
Fixed in 9.0.14-1.el9_7
aspnetcore-targeting-pack-10.0
Fixed in 10.0.4-1.el9_7
aspnetcore-targeting-pack-9.0
Fixed in 9.0.14-1.el9_7
dotnet-apphost-pack-10.0
Fixed in 10.0.4-1.el9_7
dotnet-apphost-pack-9.0
Fixed in 9.0.14-1.el9_7
dotnet-host
Fixed in 10.0.4-1.el9_7
dotnet-hostfxr-10.0
Fixed in 10.0.4-1.el9_7
dotnet-hostfxr-9.0
Fixed in 9.0.14-1.el9_7
dotnet-runtime-10.0
Fixed in 10.0.4-1.el9_7
dotnet-runtime-9.0
Fixed in 9.0.14-1.el9_7
dotnet-runtime-dbg-10.0
Fixed in 10.0.4-1.el9_7
dotnet-runtime-dbg-9.0
Fixed in 9.0.14-1.el9_7
dotnet-sdk-10.0
Fixed in 10.0.104-1.el9_7
dotnet-sdk-10.0-source-built-artifacts
Fixed in 10.0.104-1.el9_7
dotnet-sdk-9.0
Fixed in 9.0.115-1.el9_7
dotnet-sdk-9.0-source-built-artifacts
Fixed in 9.0.115-1.el9_7
dotnet-sdk-aot-10.0
Fixed in 10.0.104-1.el9_7
dotnet-sdk-aot-9.0
Fixed in 9.0.115-1.el9_7
dotnet-sdk-dbg-10.0
Fixed in 10.0.104-1.el9_7
dotnet-sdk-dbg-9.0
Fixed in 9.0.115-1.el9_7
dotnet-targeting-pack-10.0
Fixed in 10.0.4-1.el9_7
dotnet-targeting-pack-9.0
Fixed in 9.0.14-1.el9_7
dotnet-templates-10.0
Fixed in 10.0.104-1.el9_7
dotnet-templates-9.0
Fixed in 9.0.115-1.el9_7
netstandard-targeting-pack-2.1
Fixed in 9.0.115-1.el9_7

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

CloudLinux 10

aspnetcore-runtime-10.0
Fixed in 10.0.4-1.el10_1
aspnetcore-runtime-9.0
Fixed in 9.0.14-1.el10_1
aspnetcore-runtime-dbg-10.0
Fixed in 10.0.4-1.el10_1
aspnetcore-runtime-dbg-9.0
Fixed in 9.0.14-1.el10_1
aspnetcore-targeting-pack-10.0
Fixed in 10.0.4-1.el10_1
aspnetcore-targeting-pack-9.0
Fixed in 9.0.14-1.el10_1
dotnet-apphost-pack-10.0
Fixed in 10.0.4-1.el10_1
dotnet-apphost-pack-9.0
Fixed in 9.0.14-1.el10_1
dotnet-host
Fixed in 10.0.4-1.el10_1
dotnet-hostfxr-10.0
Fixed in 10.0.4-1.el10_1
dotnet-hostfxr-9.0
Fixed in 9.0.14-1.el10_1
dotnet-runtime-10.0
Fixed in 10.0.4-1.el10_1
dotnet-runtime-9.0
Fixed in 9.0.14-1.el10_1
dotnet-runtime-dbg-10.0
Fixed in 10.0.4-1.el10_1
dotnet-runtime-dbg-9.0
Fixed in 9.0.14-1.el10_1
dotnet-sdk-10.0
Fixed in 10.0.104-1.el10_1
dotnet-sdk-10.0-source-built-artifacts
Fixed in 10.0.104-1.el10_1
dotnet-sdk-9.0
Fixed in 9.0.115-1.el10_1
dotnet-sdk-9.0-source-built-artifacts
Fixed in 9.0.115-1.el10_1
dotnet-sdk-aot-10.0
Fixed in 10.0.104-1.el10_1
dotnet-sdk-aot-9.0
Fixed in 9.0.115-1.el10_1
dotnet-sdk-dbg-10.0
Fixed in 10.0.104-1.el10_1
dotnet-sdk-dbg-9.0
Fixed in 9.0.115-1.el10_1
dotnet-targeting-pack-10.0
Fixed in 10.0.4-1.el10_1
dotnet-targeting-pack-9.0
Fixed in 9.0.14-1.el10_1
dotnet-templates-10.0
Fixed in 10.0.104-1.el10_1
dotnet-templates-9.0
Fixed in 9.0.115-1.el10_1
netstandard-targeting-pack-2.1
Fixed in 9.0.115-1.el10_1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Ubuntu 22.04 LTS

dotnet7
No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

dotnet10
Fixed in 10.0.104-10.0.4-0ubuntu1~24.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

dotnet10
Fixed in 10.0.104-10.0.4-0ubuntu1~25.10.1
dotnet9
Fixed in 9.0.115-9.0.14-0ubuntu1~25.10.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.