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Windows Active Directory CVE-2026-65777

| EUVDEUVD-2026-56731 MEDIUM
Inadequate Encryption Strength (CWE-326)
2026-08-11 secure@microsoft.com GHSA-92c8-rfc2-vg9x
5.3
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
5.3 MEDIUM
AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
vuln.today AI
5.3 MEDIUM

Network-reachable but high complexity; low privileges required; integrity-only impact consistent with security feature bypass via cryptographic weakness.

3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
4.0 AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

3
Analysis Generated
Aug 11, 2026 - 22:19 vuln.today
Patch available
Aug 11, 2026 - 18:19 EUVD
CVE Published
Aug 11, 2026 - 17:18 cve.org
MEDIUM 5.3

DescriptionCVE.org

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

AnalysisAI

Inadequate encryption strength in Windows Active Directory enables a low-privileged authenticated network attacker to bypass a security feature, resulting in a high-integrity impact. Affected platforms span Windows Server 2022, Windows Server 2025, and multiple Windows 11 release channels (23H2 through 26H1). …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
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Vulnerability AssessmentAI

Exploitation The attacker must hold at least low-level domain credentials (PR:L), confirming this is not an unauthenticated attack surface. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS base score of 5.3 (Medium) reflects a meaningful but bounded risk profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patch is confirmed available. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-65777 vulnerability details – vuln.today

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