CVE-2026-65777

Analyzed Analyzed - Analysis Complete

Inadequate Encryption Strength in Windows Active Directory

Publication date: 2026-08-11

Last updated on: 2026-08-14

Assigner: Microsoft Corporation

Description

Inadequate encryption strength in Windows Active Directory allows an authorized attacker to bypass a security feature over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-14

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-65777

EUVD

EUVD-2026-56731

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_23h2	to 10.0.22631.7517 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7517 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9106 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9106 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2704 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2704 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9106 (exc)
microsoft	windows_server_2022	to 10.0.20348.5440 (exc)
microsoft	windows_server_2025	to 10.0.26100.33222 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9106 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-326	The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.

Attack-Flow Graph

Executive Summary

This vulnerability involves inadequate encryption strength in Windows Active Directory. An authorized attacker can bypass a security feature over a network due to weak encryption.

Detection Guidance

This vulnerability involves inadequate encryption strength in Windows Active Directory. Detection typically requires checking Active Directory configurations and encryption settings. Use PowerShell commands like Get-ADDomain or network monitoring tools to inspect LDAPS traffic for weak encryption protocols.

Impact Analysis

An attacker could bypass security controls, potentially gaining unauthorized access to sensitive data or systems within the Active Directory environment.

Compliance Impact

This vulnerability may lead to non-compliance with data protection regulations due to unauthorized access risks, potentially violating confidentiality requirements in GDPR or HIPAA.

Mitigation Strategies

Apply the latest security updates from Microsoft to address the inadequate encryption strength in Windows Active Directory. Monitor Microsoft's advisory for patches and follow their guidance for configuration changes.

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