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Vulnerability Assessment

Weakness
CWE
CWE-835
ASVS 5.0
V15 - Secure Coding and Architecture Loop termination conditions
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.8% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 14, 2026

Denial of service in Windows Active Directory (spanning Windows 10, Windows 11, and Windows Server 2012 through 2025) lets a remote, unauthenticated attacker send crafted network traffic that drives an AD service into an infinite loop, exhausting CPU and rendering domain services unavailable. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N with high availability impact and no confidentiality or integrity loss, this is a pure availability threat against domain controllers. Microsoft has released a patch; there is no public exploit identified at time of analysis and no CISA KEV listing.

Affected VersionsENISA

Windows Server 2012 (Server Core installation) 6.2.9200.0 <6.2.9200.26226
Windows 11 version 26H1 10.0.28000.0 <10.0.28000.2269
Windows Server 2012 R2 6.3.9600.0 <6.3.9600.23291
Windows Server 2016 10.0.14393.0 <10.0.14393.9339
Windows Server 2025 10.0.26100.0 <10.0.26100.33158
Windows 10 Version 22H2 10.0.19045.0 <10.0.19045.7548
Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9339
Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.33158
Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7548
Windows Server 2022 10.0.20348.0 <10.0.20348.5386
Windows Server 2012 6.2.9200.0 <6.2.9200.26226
Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.8875
Windows 10 Version 1809 10.0.17763.0 <10.0.17763.9020
Windows Server 2019 10.0.17763.0 <10.0.17763.9020
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 <6.3.9600.23291
Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.8875
Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9339
Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.9020

Affected Packages

euvd windows_10_version_1607 fix: 10.0.14393.9339
euvd windows_10_version_1809 fix: 10.0.17763.9020
euvd windows_10_version_21h2 fix: 10.0.19044.7548
euvd windows_10_version_22h2 fix: 10.0.19045.7548
euvd windows_11_version_24h2 fix: 10.0.26100.8875
euvd windows_11_version_25h2 fix: 10.0.26200.8875
euvd windows_11_version_26h1 fix: 10.0.28000.2269
euvd windows_server_2012 fix: 6.2.9200.26226
euvd windows_server_2012_r2 fix: 6.3.9600.23291
euvd windows_server_2012_r2_server_core_installation fix: 6.3.9600.23291
euvd windows_server_2012_server_core_installation fix: 6.2.9200.26226
euvd windows_server_2016 fix: 10.0.14393.9339
euvd windows_server_2016_server_core_installation fix: 10.0.14393.9339
euvd windows_server_2019 fix: 10.0.17763.9020
euvd windows_server_2019_server_core_installation fix: 10.0.17763.9020
euvd windows_server_2022 fix: 10.0.20348.5386
euvd windows_server_2025 fix: 10.0.26100.33158
euvd windows_server_2025_server_core_installation fix: 10.0.26100.33158

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 18 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

Vendor (microsoft) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

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

DescriptionCVE.org

Loop with unreachable exit condition ('infinite loop') in Windows Active Directory allows an unauthorized attacker to deny service over a network.

Executive ViewAI

Why It Matters

Windows Active Directory across Windows 10, 11, and Server 2012-2025 is vulnerable to a remote denial-of-service attack that can render domain controllers unresponsive and block critical authentication and directory services. No public exploit has been identified at this time, but any unauthenticated attacker can trigger the vulnerability using crafted network traffic, making patch deployment urgent to prevent service outages.

Recommended Action

Within 24 hours, identify and inventory all domain controllers running Windows 10, 11, Windows Server 2012, 2016, 2019, 2022, or 2025, and assess current patch levels to determine exposure scope. Within 7 days, apply Microsoft's released patch to all affected domain controllers in a coordinated rollout, prioritizing production environments to minimize service interruption risk. Within 30 days, conduct a complete audit to confirm patch deployment across all domain controllers, validate that no vulnerable instances remain, and document remediation completion for compliance records.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.8%
Top 46% exploitable
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation Unlikely
Data Quality
5 sources
Confidence: Medium
EUVD 🇯🇵JVN NVD CVE.org EPSS Vulnrichment MSRC

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.8%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
High
Technical Impact
Partial

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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References

Advisories & patches
PATCH https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54119 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-54119

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