CVE-2026-65810

.NET Framework Elevation of Privilege Vulnerability

Published Aug 11, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Description

Relative path traversal in .NET Framework allows an unauthorized attacker to elevate privileges locally.

Affected Products

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

Microsoft .NET Framework 3.5

affected

Version	Status	Constraints
`3.5.0`	affected	< 2.0.50727.9183 & 3.0.30729.9169

Microsoft

Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2

affected

Version	Status	Constraints
`3.0.0.0`	affected	< 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0

Microsoft

Microsoft .NET Framework 3.5 AND 4.7.2

affected

Version	Status	Constraints
`4.7.0`	affected	< 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0

Microsoft

Microsoft .NET Framework 3.5 AND 4.8

affected

Version	Status	Constraints
`4.8.0`	affected	< 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0

Microsoft

Microsoft .NET Framework 3.5 AND 4.8.1

affected

Version	Status	Constraints
`4.8.1`	affected	< 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0

Microsoft

Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2

affected

Version	Status	Constraints
`4.7.0`	affected	< 4.7.4144.0

Microsoft

Microsoft .NET Framework 4.8

affected

Version	Status	Constraints
`4.8.0`	affected	< 4.8.4805.0

Microsoft

Microsoft .NET Framework 4.8.1

affected

Version	Status	Constraints
`4.8.0.0`	affected	< 4.8.9344.0

Configuration 1 [-]

AND

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

OR	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_2012:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 2 [-]

AND

OR	cpe:2.3:a:microsoft:.net_framework:3.5:-::::::
	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_10_1607:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1607:-::::::x86:
	cpe:2.3:o:microsoft:windows_server_2016:-:::::::*

Configuration 3 [-]

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_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_2019:-:::::::*

Configuration 4 [-]

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 5 [-]

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:-::::::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 6 [-]

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_server_2022:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2025:-::::::x64:

Configuration 7 [-]

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 8 [-]

AND

cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_11_26h1:-::::::arm64:
	cpe:2.3:o:microsoft:windows_11_26h1:-::::::x64:

No data.

Vendor Product Versions

Microsoft

.net

Version	Status	Scheme	Platform
`—`	affected	—	—

Microsoft

.net Framework

Version	Status	Scheme	Platform
`[3.5.0,2.0.50727.9183)`	affected	generic	['windows_11_version_26h1_for_arm64-based_systems', 'windows_11_version_26h1_for_x64-based_systems', 'windows_server_2012', 'windows_server_2012_(server_core_installation)', 'windows_server_2012_r2', 'windows_server_2012_r2_(server_core_installation)']

Microsoft

.net Framework

Version	Status	Scheme	Platform
`[3.0.0.0,2.0.50727.8984)`	affected	generic	['windows_10_version_1607_for_32-bit_systems', 'windows_10_version_1607_for_x64-based_systems', 'windows_server_2016', 'windows_server_2016_(server_core_installation)']

Microsoft

.net Framework

Version	Status	Scheme	Platform
`[4.7.0,2.0.50727.9070)`	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_server_2019', 'windows_server_2019_(server_core_installation)']

Microsoft

.net Framework

Version	Status	Scheme	Platform
`[4.8.0,2.0.50727.9070)`	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

Version	Status	Scheme	Platform
`[4.8.1,2.0.50727.9183)`	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_server_2022', 'windows_server_2022_(server_core_installation)', 'windows_server_2025', 'windows_server_2025_(server_core_installation)']

Microsoft

.net Framework

Version	Status	Scheme	Platform
`[4.7.0,4.7.4144.0)`	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

Version	Status	Scheme	Platform
`[4.8.0,4.8.4805.0)`	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

.net Framework

Version	Status	Scheme	Platform
`[4.8.0.0,4.8.9344.0)`	affected	generic	['windows_11_version_26h1_for_arm64-based_systems', 'windows_11_version_26h1_for_x64-based_systems']

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

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.

Exploit prediction score: < 1% (0.404% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65810

History

Aug 14, 2026 1:45 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Microsoft windows 10 1607 Microsoft windows 10 1809 Microsoft windows 10 21h2 Microsoft windows 10 22h2 Microsoft windows 11 23h2 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows Server 2012 Microsoft windows Server 2016 Microsoft windows Server 2019 Microsoft windows Server 2022 Microsoft windows Server 2025
CPEs		cpe:2.3:a:microsoft:.net_framework:3.5:-:::::: cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::* cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::* cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::* cpe:2.3:a:microsoft:.net_framework:4.7:::::::* cpe:2.3:a:microsoft:.net_framework:4.8.1:::::::* cpe:2.3:a:microsoft:.net_framework:4.8:::::::* 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_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_2012:-:::::::* cpe:2.3:o:microsoft:windows_server_2012:r2:::::::* cpe:2.3:o:microsoft:windows_server_2016:-:::::::* cpe:2.3:o:microsoft:windows_server_2019:-:::::::* cpe:2.3:o:microsoft:windows_server_2022:-:::::::* cpe:2.3:o:microsoft:windows_server_2025:-::::::x64:
Vendors & Products		Microsoft windows 10 1607 Microsoft windows 10 1809 Microsoft windows 10 21h2 Microsoft windows 10 22h2 Microsoft windows 11 23h2 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows Server 2012 Microsoft windows Server 2016 Microsoft windows Server 2019 Microsoft windows Server 2022 Microsoft windows Server 2025

Aug 12, 2026 3:30 PM Scoring metrics updated View changes

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

Aug 11, 2026 5:15 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Relative path traversal in .NET Framework allows an unauthorized attacker to elevate privileges locally.
Title		.NET Framework Elevation of Privilege Vulnerability
First Time appeared		Microsoft Microsoft .net Microsoft .net Framework
Weaknesses		CWE-23
CPEs		cpe:2.3:a:microsoft:.net:::::::: cpe:2.3:a:microsoft:.net_framework::::::::
Vendors & Products		Microsoft Microsoft .net Microsoft .net Framework
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65810
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 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 Windows Server 2025

Weaknesses