Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Microsoft .NET 11.0 installed on Linux affected
Version Status Constraints
11.0.0-preview.1 affected < 11.0.0
Microsoft .NET 11.0 installed on Mac OS affected
Version Status Constraints
11.0.0-preview.1 affected < 11.0.0
Microsoft .NET 11.0 installed on Windows affected
Version Status Constraints
11.0.0-preview.1 affected < 11.0.0
Microsoft System.Text.Json affected
Version Status Constraints
NOT_YET_AVAILABLE affected < 11.0.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Microsoft Subscribe
.net 11.0 Installed On Linux Subscribe
.net 11.0 Installed On Mac Os Subscribe
.net 11.0 Installed On Windows Subscribe
System.text.json Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-120796 cve-icon
History

Tue, 10 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Description Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
Title .NET Denial of Service Vulnerability
First Time appeared Microsoft
Microsoft .net 11.0 Installed On Linux
Microsoft .net 11.0 Installed On Mac Os
Microsoft .net 11.0 Installed On Windows
Microsoft system.text.json
Weaknesses CWE-407
CPEs cpe:2.3:a:microsoft:.net_11.0_installed_on_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_11.0_installed_on_mac_os:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_11.0_installed_on_windows:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:system.text.json:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net 11.0 Installed On Linux
Microsoft .net 11.0 Installed On Mac Os
Microsoft .net 11.0 Installed On Windows
Microsoft system.text.json
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-11-10T18:23:53.968Z

Reserved: 2026-11-02T22:42:10.893Z

Link: CVE-2026-120796

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses