CVE-2026-59116

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Remote Desktop Cryptographic Algorithm Bypass

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Use of a broken or risky cryptographic algorithm in Windows Remote Desktop allows an unauthorized attacker to bypass a security feature over a network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-59116

EUVD

EUVD-2026-99837

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	Server 2012 6.2.9200.0
Microsoft	Windows	Server 2012 (Server Core installation) 6.2.9200.0
Microsoft	Windows	Server 2012 R2 6.3.9600.0
Microsoft	Windows	Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft	Windows	Server 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-327	The product uses a broken or risky cryptographic algorithm or protocol.

Attack-Flow Graph

Executive Summary

This vulnerability involves the use of a broken or risky cryptographic algorithm in Windows Remote Desktop. An unauthorized attacker can exploit this over a network to bypass a security feature, potentially gaining unauthorized access or undermining system protections.

Impact Analysis

An attacker could bypass security features on systems running vulnerable Windows versions, leading to unauthorized access, data exposure, or further network compromise. Systems with Remote Desktop enabled are at higher risk.

Compliance Impact

This vulnerability allows bypassing a security feature via a broken cryptographic algorithm in Windows Remote Desktop, which could undermine encryption requirements in GDPR and HIPAA. Non-compliance may result if systems fail to meet data protection standards due to unsecured remote access.

Mitigation Strategies

Apply the latest security updates from Microsoft to address the cryptographic algorithm issue in Windows Remote Desktop. Disable Remote Desktop if not required and monitor for unusual network activity.

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