What is the CVSS score of CVE-2025-49733?

CVE-2025-49733 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: 0.1%.

Which versions of Windows are affected by CVE-2025-49733?

CVE-2025-49733 is a high-severity privilege escalation vulnerability in Windows Win32K affecting authenticated users, which could allow an attacker with local system access to gain elevated…. A patch is available.

How to fix or mitigate CVE-2025-49733?

Within 24 hours: Identify all Windows systems running affected Win32K components and verify current patch levels using WSUS or your patch management system. Within 7 days: Apply the vendor-released patch to all vulnerable systems, prioritizing domain controllers, file servers, and privileged workstations. Within 30 days: Validate patch deployment across 100% of Windows infrastructure and update your asset inventory to reflect patched status.

Windows CVE-2025-49733

EUVD-2025-20542 HIGH

Use After Free (CWE-416)

2025-07-08 secure@microsoft.com

Windows Denial Of Service Use After Free Memory Corruption Microsoft Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 22h2 Windows 11 23h2 Windows 11 24h2 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025

7.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:29 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

10.0.22631.5624,10.0.25398.1732,10.0.26100.4652

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20542

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:16 nvd

HIGH 7.8

DescriptionNVD

Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

Analysis

Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

Technical ContextAI

A use-after-free vulnerability occurs when a program continues to use a pointer after the referenced memory has been freed, leading to undefined behavior. This vulnerability is classified as Use After Free (CWE-416).

RemediationAI

Use memory-safe languages. Implement proper object lifecycle management. Use static and dynamic analysis tools to detect UAF patterns.

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CVE-2025-49733 vulnerability details – vuln.today

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Windows CVE-2025-49733

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code