CVE-2026-50646 - Vulnerability Details

- .NET Framework Remote Code Execution Vulnerability

Description

Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.

Published: 2026-07-14

Score: 7.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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 8.0

affected

Version	Status	Constraints
`8.0.0`	affected	< 8.0.29

Microsoft

.NET 9.0

affected

Version	Status	Constraints
`9.0.0`	affected	< 9.0.18

Microsoft

Microsoft .NET Framework 3.5

affected

Version	Status	Constraints
`3.5.0`	affected	< 2.0.50727.8983 & 3.0.30729.8978

Microsoft

Microsoft .NET Framework 3.5 AND 4.7.2

affected

Version	Status	Constraints
`4.7.0`	affected	< 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0

Microsoft

Microsoft .NET Framework 3.5 AND 4.8

affected

Version	Status	Constraints
`4.8.0`	affected	< 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0

Microsoft

Microsoft .NET Framework 3.5 AND 4.8.1

affected

Version	Status	Constraints
`4.8.1`	affected	< 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0

Microsoft

Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2

affected

Version	Status	Constraints
`4.7.0`	affected	< 4.7.4143.0

Microsoft

Microsoft .NET Framework 4.8

affected

Version	Status	Constraints
`4.8.0`	affected	< 4.8.4803.0

Microsoft

Microsoft Visual Studio 2022 version 17.12

affected

Version	Status	Constraints
`17.12.0`	affected	< 17.12.22

Microsoft

Microsoft Visual Studio 2022 version 17.14

affected

Version	Status	Constraints
`17.14.0`	affected	< 17.14.36

Microsoft

Microsoft Visual Studio 2026 version 18.7

affected

Version	Status	Constraints
`18.0`	affected	< 18.7.4

Configuration 1 [-]

AND

cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_10_1607:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1607:-::::::x86:
	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
	cpe:2.3:o:microsoft:windows_server_2016:-:::::::*

Configuration 2 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*

OR	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 3 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:3.5:-::::::
	cpe:2.3:a:microsoft:.net_framework:4.8.1:::::::*

OR	cpe:2.3:o:microsoft:windows_10_21h2:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_21h2:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_21h2:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_22h2:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_22h2:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_22h2:-::::::x86:
	cpe:2.3:o:microsoft:windows_11_23h2:-::::::arm64:
	cpe:2.3:o:microsoft:windows_11_23h2:-::::::x64:
	cpe:2.3:o:microsoft:windows_11_24h2:-::::::arm64:
	cpe:2.3:o:microsoft:windows_11_24h2:-::::::x64:
	cpe:2.3:o:microsoft:windows_11_25h2:-::::::arm64:
	cpe:2.3:o:microsoft:windows_11_25h2:-::::::x64:
	cpe:2.3:o:microsoft:windows_11_26h1:-::::::arm64:
	cpe:2.3:o:microsoft:windows_11_26h1:-::::::x64:
	cpe:2.3:o:microsoft:windows_server_2022:-:::::::*

Configuration 4 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:3.5:-::::::
	cpe:2.3:a:microsoft:.net_framework:4.8:::::::*

OR	cpe:2.3:o:microsoft:windows_10_1809:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_21h2:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_21h2:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_21h2:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_22h2:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_22h2:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_22h2:-::::::x86:
	cpe:2.3:o:microsoft:windows_server_2019:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2022:-:::::::*

Configuration 5 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:3.5:-::::::
	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*

OR	cpe:2.3:o:microsoft:windows_10_1607:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1607:-::::::x86:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::x86:
	cpe:2.3:o:microsoft:windows_server_2016:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2019:-:::::::*

Configuration 6 [-]

AND

cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 7 [-]

AND

OR	cpe:2.3:a:microsoft:.net::::::::
	cpe:2.3:a:microsoft:.net::::::::

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

Configuration 8 [-]

OR	cpe:2.3:a:microsoft:visual_studio_2022::::::::
	cpe:2.3:a:microsoft:visual_studio_2022::::::::
	cpe:2.3:a:microsoft:visual_studio_2026::::::::

Package	CPE	Advisory	Released Date
Red Hat Hardened Images
dotnet9-0-main-9.0.118-1.hum1	cpe:/a:redhat:hummingbird:1	RHSA-2026:27171	2026-06-19T00:00:00Z

Vendor Product Confidence Versions

Microsoft

.net

90%

Version	Status	Scheme	Platform
`—`	affected	—	—

Microsoft

.net

88%

Version	Status	Scheme	Platform
`[8.0.0,8.0.29)`	affected	semver	—

Microsoft

.net

88%

Version	Status	Scheme	Platform
`[9.0.0,9.0.18)`	affected	semver	—

Microsoft

.net Framework

100%

Version	Status	Scheme	Platform
`[3.5.0,2.0.50727.8983 & 3.0.30729.8978)`	affected	generic	['windows_server_2012', 'windows_server_2012_(server_core_installation)', 'windows_server_2012_r2', 'windows_server_2012_r2_(server_core_installation)']

Microsoft

.net Framework

100%

Version	Status	Scheme	Platform
`[4.7.0,2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0)`	affected	generic	['windows_10_version_1607_for_32-bit_systems', 'windows_10_version_1607_for_x64-based_systems', 'windows_10_version_1809_for_32-bit_systems', 'windows_10_version_1809_for_arm64-based_systems', 'windows_10_version_1809_for_x64-based_systems', 'windows_server_2016', 'windows_server_2016_(server_core_installation)', 'windows_server_2019', 'windows_server_2019_(server_core_installation)']

Microsoft

.net Framework

100%

Version	Status	Scheme	Platform
`[4.8.0,2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0)`	affected	generic	['windows_10_version_1809_for_32-bit_systems', 'windows_10_version_1809_for_arm64-based_systems', 'windows_10_version_1809_for_x64-based_systems', 'windows_10_version_21h2_for_32-bit_systems', 'windows_10_version_21h2_for_arm64-based_systems', 'windows_10_version_21h2_for_x64-based_systems', 'windows_10_version_22h2_for_32-bit_systems', 'windows_10_version_22h2_for_arm64-based_systems', 'windows_10_version_22h2_for_x64-based_systems', 'windows_server_2019', 'windows_server_2019_(server_core_installation)', 'windows_server_2022', 'windows_server_2022_(server_core_installation)']

Microsoft

.net Framework

100%

Version	Status	Scheme	Platform
`[4.8.1,2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0)`	affected	generic	['windows_10_version_21h2_for_32-bit_systems', 'windows_10_version_21h2_for_arm64-based_systems', 'windows_10_version_21h2_for_x64-based_systems', 'windows_10_version_22h2_for_32-bit_systems', 'windows_10_version_22h2_for_arm64-based_systems', 'windows_10_version_22h2_for_x64-based_systems', 'windows_11_version_23h2_for_arm64-based_systems', 'windows_11_version_23h2_for_x64-based_systems', 'windows_11_version_24h2_for_arm64-based_systems', 'windows_11_version_24h2_for_x64-based_systems', 'windows_11_version_25h2_for_arm64-based_systems', 'windows_11_version_25h2_for_x64-based_systems', 'windows_11_version_26h1_for_arm64-based_systems', 'windows_11_version_26h1_for_x64-based_systems', 'windows_11_version_26h2_for_arm64-based_systems', 'windows_11_version_26h2_for_x64-based_systems', 'windows_11_version_26h3_for_arm64-based_systems', 'windows_11_version_26h3_for_x64-based_systems', 'windows_11_version_26h4_for_arm64-based_systems', 'windows_11_version_26h4_for_x64-based_systems', 'windows_11_version_26h5_for_arm64-based_systems', 'windows_11_version_26h5_for_x64-based_systems', 'windows_11_version_26h6_for_arm64-based_systems', 'windows_11_version_26h6_for_x64-based_systems', 'windows_11_version_26h7_for_arm64-based_systems', 'windows_11_version_26h7_for_x64-based_systems', 'windows_11_version_26h8_for_arm64-based_systems', 'windows_11_version_26h8_for_x64-based_systems', 'windows_11_version_26h9_for_arm64-based_systems', 'windows_11_version_26h9_for_x64-based_systems', 'windows_11_version_26h10_for_arm64-based_systems', 'windows_11_version_26h10_for_x64-based_systems', 'windows_11_version_26h11_for_arm64-based_systems', 'windows_11_version_26h11_for_x64-based_systems', 'windows_11_version_26h12_for_arm64-based_systems', 'windows_11_version_26h12_for_x64-based_systems', 'windows_11_version_26h13_for_arm64-based_systems', 'windows_11_version_26h13_for_x64-based_systems', 'windows_11_version_26h14_for_arm64-based_systems', 'windows_11_version_26h14_for_x64-based_systems', 'windows_11_version_26h15_for_arm64-based_systems', 'windows_11_version_26h15_for_x64-based_systems', 'windows_11_version_26h16_for_arm64-based_systems', 'windows_11_version_26h16_for_x64-based_systems', 'windows_11_version_27h1_for_arm64-based_systems', 'windows_11_version_27h1_for_x64-based_systems', 'windows_11_version_27h2_for_arm64-based_systems', 'windows_11_version_27h2_for_x64-based_systems', 'windows_11_version_27h3_for_arm64-based_systems', 'windows_11_version_27h3_for_x64-based_systems', 'windows_11_version_27h4_for_arm64-based_systems', 'windows_11_version_27h4_for_x64-based_systems', 'windows_11_version_27h5_for_arm64-based_systems', 'windows_11_version_27h5_for_x64-based_systems', 'windows_11_version_27h6_for_arm64-based_systems', 'windows_11_server_.for_1.65.2.0_2.10.3.1_3.0.9.6_4.11.6/4.12.1_5.4174/5.3541', 'windows_11_windows_11_co_.japan_2', 'windows_server_2025', 'windows_server_2025_(server_core_installation)']

Microsoft

.net Framework

100%

Version	Status	Scheme	Platform
`[4.7.0,4.7.4143.0)`	affected	generic	['windows_server_2012', 'windows_server_2012_(server_core_installation)', 'windows_server_2012_r2', 'windows_server_2012_r2_(server_core_installation)']

Microsoft

.net Framework

100%

Version	Status	Scheme	Platform
`[4.8.0,4.8.4803.0)`	affected	generic	['windows_10_version_1607_for_32-bit_systems', 'windows_10_version_1607_for_x64-based_systems', 'windows_server_2012', 'windows_server_2012_(server_core_installation)', 'windows_server_2012_r2', 'windows_server_2012_r2_(server_core_installation)', 'windows_server_2016', 'windows_server_2016_(server_core_installation)']

Microsoft

Microsoft Visual Studio 2022

84%

Version	Status	Scheme	Platform
`[17.12.0,17.12.22)`	affected	semver	—

Microsoft

Microsoft Visual Studio 2022

84%

Version	Status	Scheme	Platform
`[17.14.0,17.14.36)`	affected	semver	—

Microsoft

Microsoft Visual Studio 2022

83%

Version	Status	Scheme	Platform
`[18.0,18.7.4)`	affected	generic	—

Microsoft

Visual Studio 2022

90%

Version	Status	Scheme	Platform
`—`	affected	—	—

Microsoft

Visual Studio 2026

90%

Version	Status	Scheme	Platform
`—`	affected	—	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00949.

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646
https://nvd.nist.gov/vuln/detail/CVE-2026-50646
https://www.cve.org/CVERecord?id=CVE-2026-50646

History

Wed, 05 Aug 2026 10:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Microsoft .net Framework Microsoft microsoft Visual Studio 2022
Vendors & Products		Microsoft .net Framework Microsoft microsoft Visual Studio 2022

Sat, 18 Jul 2026 12:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Redhat Redhat hummingbird
Weaknesses		CWE-807
CPEs		cpe:/a:redhat:hummingbird:1
Vendors & Products		Redhat Redhat hummingbird
References		https://nvd.nist.gov/vuln/detail/CVE-2026-50646 https://www.cve.org/CVERecord?id=CVE-2026-50646
Metrics	threat_severity `None`	threat_severity `Important`

Wed, 15 Jul 2026 11:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 14 Jul 2026 20:00:00 +0000

Type	Values Removed	Values Added
Description		Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Title		.NET Framework Remote Code Execution Vulnerability
First Time appeared		Microsoft Microsoft .net Microsoft visual Studio 2022 Microsoft visual Studio 2026
Weaknesses		CWE-502 CWE-693
CPEs		cpe:2.3:a:microsoft:.net:::::::: cpe:2.3:a:microsoft:visual_studio_2022:::::::: cpe:2.3:a:microsoft:visual_studio_2026::::::::
Vendors & Products		Microsoft Microsoft .net Microsoft visual Studio 2022 Microsoft visual Studio 2026
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646
Metrics		cvssV3_1 `{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}`

Subscriptions

Microsoft .net .net Framework Microsoft Visual Studio 2022 Visual Studio 2022 Visual Studio 2026 Windows Windows 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 23h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022

Redhat Hummingbird

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-07-14T19:29:56.821Z

Updated: 2026-08-14T17:23:29.936Z

Reserved: 2026-06-05T14:33:50.830Z

Link: CVE-2026-50646

Vulnrichment

Updated: 2026-07-15T11:00:54.817Z

NVD

Status : Analyzed

Published: 2026-07-14T20:17:37.670

Modified: 2026-07-24T13:40:03.973

Link: CVE-2026-50646

Redhat

Severity : Important

Publid Date: 2026-07-14T19:29:56Z

Links: CVE-2026-50646 - Bugzilla

OpenCVE Enrichment

Updated: 2026-08-05T10:23:01Z

Weaknesses

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

Exploitation none

Automatable no

Technical Impact total

Subscriptions

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