What is the CVSS score of EUVD-2026-44235?

EUVD-2026-44235 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Which versions of Windows Server 2012 are affected by EUVD-2026-44235?

A local privilege escalation in Microsoft XML Core Services (MSXML) affects Windows 10, Windows 11, and Windows Server systems, enabling authenticated users to escalate privileges and run malicious…. A patch is available.

How to fix or mitigate EUVD-2026-44235?

Within 24 hours: Inventory all Windows 10, Windows 11, and Windows Server systems in your environment and assess which handle sensitive workloads or contain critical data; prioritize servers and endpoints with elevated privileges or administrative access. Within 7 days: Deploy the vendor-released patch to all affected systems beginning with high-criticality infrastructure, development environments, and systems handling sensitive data. Within 30 days: Verify patch compliance across 100% of the Windows infrastructure through patch management reporting, and monitor for exploitation attempts targeting this vulnerability (CWE-416 use-after-free patterns).

Windows Server 2012 EUVD-2026-44235

| CVE-2026-50359 HIGH

Use After Free (CWE-416)

2026-07-14 microsoft

GHSA-54wx-vc69-4w38

Denial Of Service Use After Free Memory Corruption Microsoft Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2025 Windows 10 Version 1607 Windows 10 Version 1809 Windows 10 Version 21H2 Windows 10 Version 22H2 Windows Server 2016 Server Core Installation Windows Server 2019 Server Core Installation Windows 11 Version 24H2 Windows 11 Version 25H2 Windows 11 Version 26H1 Windows Server 2025 Server Core Installation Windows Server 2012 Server Core Installation Windows Server 2012 R2 Windows Server 2012 R2 Server Core Installation

7.8

CVSS 3.1 · NVD

Severity by source

Vendor (microsoft) PRIMARY

HIGH

qualitative

NVD

7.8 HIGH

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

vuln.today AI

7.0 HIGH

Local use-after-free needing an existing low-priv foothold (AV:L/PR:L) and a hard-to-win heap race (AC:H), yielding full local compromise (C/I/A:H) without scope change.

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

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

Primary rating from Vendor (microsoft).

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Jul 20, 2026 - 17:43 vuln.today

v2 (cvss_changed)

Re-analysis Queued

Jul 20, 2026 - 17:37 vuln.today

cvss_changed

CVSS changed

Jul 20, 2026 - 17:37 NVD

7.0 (HIGH) 7.8 (HIGH)

Analysis Generated

Jul 14, 2026 - 21:28 vuln.today

CVE Published

Jul 14, 2026 - 17:09 cve.org

HIGH 7.0

DescriptionNVD

Use after free in Microsoft XML Core Services allows an authorized attacker to elevate privileges locally.

AnalysisAI

Local privilege escalation in Microsoft XML Core Services (MSXML) lets an already-authenticated user on affected Windows 10, Windows 11, and Windows Server systems corrupt memory via a use-after-free (CWE-416) and run code at elevated privilege. The flaw was reported by Microsoft and is patched; there is no public exploit identified at time of analysis, and EPSS estimates a low 0.25% (16th percentile) exploitation probability. Impact is total (high confidentiality, integrity, and availability) but requires prior local access.