What is the CVSS score of EUVD-2026-73623?

EUVD-2026-73623 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.1%.

Which versions of Windows Kerberos are affected by EUVD-2026-73623?

Windows Kerberos service vulnerability (CVE-2026-69760) allows unauthenticated remote attackers to crash the authentication service on domain-joined systems, directly disrupting logon and service…. A patch is available.

How to fix or mitigate EUVD-2026-73623?

Within 24 hours, identify all Windows versions in your environment using asset management tools (SCCM, Intune, or network scanning) and cross-reference against Microsoft's patch list to determine exposure scope; notify security and infrastructure teams of DoS risk. Within 7 days, deploy Microsoft's released patches to all domain-joined systems by priority (domain controllers and critical servers first, then workstations and client systems), using Windows Update, WSUS, or your enterprise patch management tool; validate Kerberos service health post-patch via authentication logs and Kerberos service status checks. Within 30 days, complete patch deployment across all Windows systems in scope, conduct a full patch compliance audit via Group Policy reporting, and implement network segmentation or rate-limiting on Kerberos traffic (port 88 TCP/UDP) as defense-in-depth measures for any systems requiring extended patching windows due to compatibility concerns.

Windows Kerberos EUVD-2026-73623

| CVE-2026-69760 HIGH

Out-of-bounds Read (CWE-125)

2026-09-08 secure@microsoft.com

GHSA-v96h-rmxv-74p8

Microsoft

7.5

CVSS 3.1 · Vendor: microsoft

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

vuln.today AI

7.5 HIGH

Network-exposed Kerberos service, no auth needed, DoS-only impact aligns with AV:N/PR:N/C:N/I:N/A:H.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Metadata Corrected

Sep 09, 2026 - 02:40 vuln.today

tag: Information Disclosure removed

Metadata Corrected

Sep 09, 2026 - 02:40 vuln.today

tag: Buffer Overflow removed

Analysis Generated

Sep 09, 2026 - 02:31 vuln.today

Patch available

Sep 08, 2026 - 18:35 EUVD

CVE Published

Sep 08, 2026 - 18:19 cve.org

HIGH 7.5

DescriptionCVE.org

Out-of-bounds read in Windows Kerberos allows an unauthorized attacker to deny service over a network.

AnalysisAI

Out-of-bounds read (CWE-125) in the Windows Kerberos implementation enables unauthenticated remote denial of service across a broad swath of Microsoft Windows versions. An attacker who can send a crafted Kerberos request over the network can crash the Kerberos service, disrupting authentication for all domain-joined users and services on the affected host. …

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Vulnerability AssessmentAI

Exploitation	No special conditions are required beyond network reachability to the Windows Kerberos service on TCP/UDP port 88. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately reflects a straightforward, unauthenticated network DoS against a widely exposed service. … 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	Apply the Microsoft-released patches corresponding to the installed Windows version: Windows 11 24H2/Server 2025 to build 10.0.26100.9445 or 10.0.26100.33438, Windows 11 23H2 to 10.0.22631.7582, Windows 11 25H2 to 10.0.26200.9445, Windows 11 26H1 to 10.0.28000.2954, Windows Server 2022 to 10.0.20348.5622, Windows Server 2019 and Windows 10 1809 to 10.0.17763.9245, Windows Server 2016, Windows 10 1607 and Windows 10 21H2/22H2 to their respective fixed builds as listed above. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all Windows versions in your environment using asset management tools (SCCM, Intune, or network scanning) and cross-reference against Microsoft's patch list to determine exposure scope; notify security and infrastructure teams of DoS risk. …

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