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CVE-2026-44799: CWE-122: Heap-based Buffer Overflow in Microsoft Remote Desktop client for Windows Desktop

0
High
VulnerabilityCVE-2026-44799cvecve-2026-44799cwe-122gcve
Published: 06/09/2026 (06/09/2026, 17:06:20 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Remote Desktop client for Windows Desktop

Description

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVSS v3.1

Score 7.5high

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Affected software

Microsoft

Remote Desktop client for Windows Desktop

Affected versions
>=1.2.0.0 <1.2.7214.0

Microsoft

Windows 10 Version 1607

Affected versions
>=10.0.14393.0 <10.0.14393.9234

Microsoft

Windows 10 Version 1809

Affected versions
>=10.0.17763.0 <10.0.17763.8880

Microsoft

Windows 10 Version 21H2

Affected versions
>=10.0.19044.0 <10.0.19044.7417

Microsoft

Windows 10 Version 22H2

Affected versions
>=10.0.19045.0 <10.0.19045.7417

Microsoft

Windows 11 version 23H2

Affected versions
>=10.0.22631.0 <10.0.22631.7219

Microsoft

Windows 11 Version 23H2

Affected versions
>=10.0.22631.0 <10.0.22631.7219

Microsoft

Windows 11 Version 24H2

Affected versions
>=10.0.26100.0 <10.0.26100.8655

Microsoft

Windows 11 Version 25H2

Affected versions
>=10.0.26200.0 <10.0.26200.8655

Microsoft

Windows 11 version 26H1

Affected versions
>=10.0.28000.0 <10.0.28000.2269

Microsoft

Windows App Client for Windows Desktop

Affected versions
>=1.00 <2.0.1193.0

Microsoft

Windows Server 2012

Affected versions
>=6.2.9200.0 <6.2.9200.26132

Microsoft

Windows Server 2012 (Server Core installation)

Affected versions
>=6.2.9200.0 <6.2.9200.26132

Microsoft

Windows Server 2012 R2

Affected versions
>=6.3.9600.0 <6.3.9600.23228

Microsoft

Windows Server 2012 R2 (Server Core installation)

Affected versions
>=6.3.9600.0 <6.3.9600.23228

Microsoft

Windows Server 2016

Affected versions
>=10.0.14393.0 <10.0.14393.9234

Microsoft

Windows Server 2016 (Server Core installation)

Affected versions
>=10.0.14393.0 <10.0.14393.9234

Microsoft

Windows Server 2019

Affected versions
>=10.0.17763.0 <10.0.17763.8880

Microsoft

Windows Server 2019 (Server Core installation)

Affected versions
>=10.0.17763.0 <10.0.17763.8880

Microsoft

Windows Server 2022

Affected versions
>=10.0.20348.0 <10.0.20348.5256

Microsoft

Windows Server 2025

Affected versions
>=10.0.26100.0 <10.0.26100.32995

Microsoft

Windows Server 2025 (Server Core installation)

Affected versions
>=10.0.26100.0 <10.0.26100.32995

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/14/2026, 13:24:23 UTC

Technical Analysis

This vulnerability (CVE-2026-44799) involves a heap-based buffer overflow in the Microsoft Remote Desktop client for Windows Desktop version 1.2.0.0. It enables an attacker without privileges to execute arbitrary code remotely by exploiting the overflow condition. The vulnerability is tracked under CWE-122. Microsoft has published an official fix to remediate this security issue.

Potential Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system remotely, potentially leading to full compromise including confidentiality, integrity, and availability impacts.

Mitigation Recommendations

An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44799 to remediate this vulnerability.

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Technical Details

Data Version
5.2
Assigner Short Name
microsoft
Date Reserved
2026-05-07T20:07:18.270Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
official-fix
Vendor Advisory Urls
[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44799","vendor":"Microsoft"}]

Threat ID: 6a284ccb8dd33fbd85664969

Added to database: 06/09/2026, 17:26:35 UTC

Last enriched: 08/14/2026, 13:24:23 UTC

Last updated: 09/13/2026, 10:01:31 UTC

Views: 85

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