CVE-2026-80074: CWE-122: Heap-based Buffer Overflow in Microsoft 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
8.8high
Affected software
Microsoft
Remote Desktop client for Windows Desktop
pkg:nuget/microsoft.remotedesktopclientRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-80074) involves a heap-based buffer overflow in the Microsoft Remote Desktop client for Windows Desktop. Exploitation of this flaw enables an attacker without privileges to execute arbitrary code remotely, potentially compromising the affected system. The vulnerability affects versions starting from 1.2.0.0 up to but not including 1.2.7279.0. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation can lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. This could allow attackers to fully compromise the targeted machine running the vulnerable Remote Desktop client.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided security update as soon as possible. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80074 for detailed patching instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 08/25/2026
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [object Object]
Threat ID: 6aa04566acd9273b49faa2d3
Added to database: 09/08/2026, 17:27:02 UTC
Last enriched: 10/14/2026, 22:03:57 UTC
Last updated: 10/24/2026, 08:45:12 UTC
Views: 22
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