CVE-2026-65777: Active Directory Security Feature Bypass Vulnerability

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

CSIRTS triage

What: Inadequate encryption strength in Windows Active Directory allows authorized attackers to bypass a security feature over a network.
Who is affected: Authorized users or network-based attackers targeting Active Directory deployments.
Urgency: Medium severity (CVSS 5.3); security feature bypass requires prior authorization but impacts AD security posture.
Action: Apply the latest security patch for Windows Active Directory and review encryption policies.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-657770.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-65777	coverage & exploitation status	NVD · CVE.org

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