Authenticated security bypass via inadequate encryption strength
Published Aug 11, 2026 · Updated Aug 25, 2026
Inadequate encryption strength in Windows Active Directory allows remote authenticated users to bypass a security feature over a network. Microsoft identifies weak encryption as the cause but has not disclosed the affected protocol, cryptographic primitive, or validation path. Exploitation requires network access, low privileges, and high-complexity conditions; successful attacks compromise integrity without reported data disclosure or service interruption.
Summary
What happened
Inadequate encryption strength in Windows Active Directory allows remote authenticated users to bypass a security feature over a network. Microsoft identifies weak encryption as the cause but has not disclosed the affected protocol, cryptographic primitive, or validation path. Exploitation requires network access, low privileges, and high-complexity conditions; successful attacks compromise integrity without reported data disclosure or service interruption.
The record
- CVE
- CVE-2026-65777
- Published
- Aug 11, 2026
- Updated
- Aug 25, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-326
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=10.0.26100.0 <10.0.26100.33296
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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